Mathematics Middle School

Plz help
A cheetah runs at a speed of 50 miles for every hour. If the distance traveled, in miles, is d and time, in hours, is t, which equation shows the relationship between d and t?
A.t=50d
B.d=50 + t
C.d=50t
D.t=50 +d

Answers

Answer 1
.t=50 +d so the answer is d

Related Questions

What fraction makes the equation true?

2/3 x blank = 8/12

Answers

So, find x to complete [tex] \frac{2}{3} [/tex]x = [tex] \frac{8}{12} [/tex]
But, since 8/12 is already equal to 2/3, this means:

x=1
Its 1!! Hope This Helps

what are vertical angles? give an example.

Answers

THERE YOU HAVE IT


HOPE THAT HELPS!!

What is the length of the altitude of the equilateral triangle below?

Answers

the actual right answer is c.

ANSWER

The length of the altitude is [tex]3\sqrt{3}[/tex] units


EXPLANATION

The altitude of a triangle is the vertical height of the triangle.


From the diagram the altitude is [tex]a[/tex]


Method 1: We can use Pythagoras theorem to find [tex]a[/tex]


[tex]6^2=a^2+3^2[/tex]


[tex]6^2-3^2=a^2[/tex]


[tex]36-9=a^2[/tex]


[tex]27=a^2[/tex]


We take the square root of both sides,

[tex]\sqrt{27}=a[/tex]


[tex]\sqrt{9\times3}=a[/tex]


[tex]\sqrt{9} \times \sqrt{3}=a[/tex]


[tex]3\sqrt{3}=a[/tex]


Method 2 Using Trigonometry

[tex]sin(60\degree)=\frac{a}{6}[/tex]

[tex]6sin(60\degree)=a[/tex]


[tex]a=6\times \frac{\sqrt{3}} {2}[/tex]


[tex]a=3\sqrt{3}[/tex]






suppose you have a 100 millimeter cup a 300 millimeter cup and a 500-milliliter cup list two different ways you can measure exactly 1 liter

Answers

Hey there!

I will list out five ways for you, so you can choose either two.

1st way :
One 500 milliliter cup
One 300 milliliter cup
Two 100 milliliter cups

2nd way :
Two 500 milliliter cups

3rd way :
Three 300 milliliter cups
One 100 milliliter cup

4th way :
Ten 100 milliliter cups

5th way :
Two 300 milliliter cups
Four 100 milliliter cups

Hope this helps. - M

yesterday, noah ran 2 1/2 miles in 3/5 of an hour. Emily ran 3 3/4 miles in 5/6 hour. Anna ran 3 1/3 in 3/5 hour. How fast, in miles per hour l, did each person run? who ran the fastest?

Answers

To calculate the speed of each one we proceed as follows:
speed=distance/time
a] Noah's speed:
distance=2.5 miles
time=3/5 hours

speed=(2 1/2)/(3/5)
=(5/2)/(3/5)
=5/2×5/3
=25/6
=4 1/6 mi/hr

Emily's speed
distance=3 3/4 miles
time=5/6 hour
thus
speed=(3 3/4)/(5/6)
=15/4)/(5/6)
=15/4×6/5
=4 1/2 mi/hr

Anna's speed:
distance=3 1/3 miles
time=3/5
speed=(3 1/3)/(3/5
=(10/3)/(3/5)
=10/3×5/3
=5 5/9 mi/hr

Anna was the fastest

Math- finding the volume of the triangle. Please show work, I am very confused

Answers

Volume of a triangle: 1/2(2b × h)
The 1/2 and 2 cancel each other out, so it's just b × h.

Area of base: 8 × 8 = 64 cm²

Height: 12 cm

64 × 12 = 768

The volume of the triangle is 768 cm³.

Find vertical and horizontal asymtope for (x^2+2x-48)/x+8

Answers

There are none.

[tex]y=\dfrac{x^{2}+2x-48}{x+8}=\dfrac{(x+8)(x-6)}{x+8}\\\\y=x-6[/tex]

The expression describes a straight line with a hole at x=-8 where it is undefined.

krista bought 6 gallons of gasoline and paid $6.89. to the nearest tenth of a cent, what is the price of gasoline per gallon

Answers

$6.89 / 6 = $1.14

So the price of gasoline per gallon is $1.14.

Hope this Helps!!

The price per gallon of gasoline is the cost of one gallon of gasoline which can be obtained by dividing the cost by the number gasoline purchased. Hence, the price per gallon of gasoline ls $1.15

Amount of gasoline purchased = 6 gallons

Total cost = $6.89

The price per gallon of gasoline can be calculated thus :

Total cost of gasoline ÷ Amount of gasoline purchased

Price per gallon = $6.89 ÷ 6 = $1.148

Therefore, the price per gallon of gasoline ls $1.15 (rounded to the nearest tenth)

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Consider the scatter plot.


Which choice best describes the association?



Positive association


No association



Negative association

Answers

your answer negative linear and heres why :D

negative linear is a line with dots that are mostly straight but go down

positive is when a line is going up DOES NOT have to be PERFECTLY straight

no associate is when its NOT straight AT ALL

What is the experimental probability of the arrow stopping over section 2?

Answers

9/20. Add 20+24+36=80. Then it's 36/80. Divide both the bottom and the top by 4 and you get 9/20.

Margie has a $50 budget to purchase a $45 pair of boots if there is an 8% sales tax rate then how much under budget will Marjorie be

Answers

Boots + (Boots * Tax %) < $50 budget

$45 + ($45 * 8%) < $50
45 + (45 * 0.08) < 50
45 + 3.60 < 50
48.60 < 50

Subtract the total boot cost from the total budgeted amount.

= 50 - 48.60
= $1.40 under budget


ANSWER: She will be $1.40 under budget.

Hope this helps! :)
Sales Tax = 8% x $45 = 0.08 x 45 = $3.60

Cost of Boots with Sales Tax = $45 + $3.60 = $48.60

Amount left = $50 - $48.60 = $1.40


Answer: $1.40

(Photo) Pls help me!
The 3 sections of a game spinner are numbered 1 to 3. Which tree diagram shows all the possible outcomes for 2 spins?

Answers

C, there are 3 options the first time, and after that, there are 3 options for each of those. So it would be C.

The tree diagram shows all the possible outcomes for 2 spins C is correct.

We have given that,

The 3 sections of a game spinner are numbered 1 to 3.

We have to determine, which tree diagram shows all the possible outcomes for 2 spins.

There are 3 options the first time and after that,

There are 3 options for each of those.

So it would be C.

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PLEASE HELP! In college, you earn credits for courses taken. For each semester, tuition at a local college is $2400, plus $184 per credit. You have financial aid that will cover $5,160 for the semester. How many credits can you take without spending any of our own money?

Answers

15 because 5,160-2400=2,760, then 2760/184

Which relations represent functions ?

Answers

Answers 1 and 3 are functions.

Answer: First and third

Step-by-step explanation:

A function is a special kind of relation between two variable such that each input corresponds to exactly one output.

In the given pictures, the first and third picture are representing function  because each input corresponds to exactly one output.

In second and fourth picture one input value corresponds to two output values.

i.e. a corresponds to 25 and 55 and x corresponds to 7 and 5 in output.

Estimate x- and y- intercepts of the graph

Answers

we know that

the x-intercepts is the value of x when y=0
the value of x is approximate 1
x=1 for y=0

the y-intercepts is the value of y when x=0
the value of y is approximate -2
y=-2  for x=0

Which is greater 17/20 or 22/25

Answers

In order to find which one is greater, get them to a common denominator.

We can get them to a common denominator of 100.

This would be:

[tex] \frac{85}{100} [/tex] and [tex] \frac{88}{100} [/tex]

As you can see [tex] \frac{88}{100} \ \textgreater \ \frac{85}{100} [/tex].

[tex] \frac{22}{25} [/tex] is greater.

Any help if possible Thank you ❤

Answers

[tex]v = \frac{1}{3} \pi {r}^{2} h \\ r = 8 \: cm \\ h = 15 \: cm[/tex]
From the diagram, we can see that the radius of the cone is 8cm and the height of the cone is 15cm. We then just plug these numbers into the formula and simplify:
[tex]v = \frac{1}{3} \pi {r}^{2} h \\ v = \frac{1}{3} \pi {(8)}^{2} (15) \\ v = 320\pi[/tex]
The volume of the cone is approximately 1005.3096 cm^3. With 3 sig figs, this is 1010 cm^3.

jeffs water bill includes a base charge of 12.00. plus a charge of 1.50 for each 1000 gallons of water used. his water bill is 28.50. how many gallons of water did jeff use?

Answers

ok u have to subtract 28.50 from 12 that is 16.50 and then u divide it by 1.50 then multiply the dividend that's your answer. I belive its 11,000 gallons.
Final answer:

Jeff has used 11,000 gallons of water. We find this by subtracting the base charge from the total bill and dividing it by the cost per 1000 gallons.

Explanation:

The water bill that Jeff receives is made up of a base charge of $12.00, plus an additional charge of $1.50 for each 1000 gallons of water used. From the given information, we know that Jeff's bill came to $28.50. To find out how much water Jeff used, we first need to subtract the base charge from the total bill which gives us $16.50. Now we divide this number by the cost per 1000 gallons, which is  $1.50. Therefore, we can say that Jeff used 16.50 ÷ 1.50 = 11 units of water. Since 1 unit refers to 1000 gallons, Jeff has used 11,000 gallons of water.

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The speed that a tsunami (tidal wave) can travel is modeled by the equation where S is the speed in kilometers per hour, and d is the average depth of the water in kilometers. A tsunami is traveling at 140 km/hr. What is the approximate average depth of the water?

Answers

Answer:

The average depth of the water will be 0.155 kilometers or 155 meters.

Step-by-step explanation:

The speed at which the tsunami waves travel is [tex]S=356\sqrt{d}[/tex]. Here S is the speed in kilometers per hour and d is the average depth of the water in kilometers.

Now, it is given that the wave travels at the speed of [tex]S=140\rm km/hr[/tex].

So, the average depth of the water will be,

[tex]S=356\sqrt{d}\\140=356\sqrt{d}\\\sqrt{d}=0.393\\d=0.155\rm km[/tex]

Therefore, the average depth of the water will be 0.155 kilometers or 155 meters.

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Answer: c

Step-by-step explanation:

0.155 km

What series of transformations map triangle △ABC onto △EDF ​ to prove that ABC≅EDF ?


translation 3 units up then a reflection across x-axis

translation 3 units down then a reflection across y-axis

translation 3 units down then a reflection across x-axis

translation 3 units up then a reflection across y-axis

Answers

Hello!

The correct answer is A translation 3 units up then a reflection across the x-axis.

Translation: moving/sliding a figure
Reflection: taking a figure and flipping it over a line.

Answer:  

translation 3 units down then a reflection across x-axis

Step-by-step explanation:

A translation is a kind of rigid motion . It trace a function that maps an object a particular distance.A reflection is a kind of rigid motion . It is mainly a flips of a shape across the line of reflection.

In the given figure, we can see that Δ ABC is vertically 3 units away from the x axis .

So we translate  Δ ABC by 3 units down and then reflect it across x axis to get ΔDEF.

What sequence of transformations, when applied to △ABC , shows that ​ ​ △ABC ​ ​ is similar to △A′B′C′ ?

dilation with respect to the origin by a scale factor of 2 followed by a translation of 2 units left

dilation with respect to the origin by a scale factor of 12 followed by a translation of 2 units right

translation of 2 units right followed by a dilation with respect to the origin by a scale factor of 12

translation of 2 units left followed by a dilation with respect to the origin by a scale factor of 12

Answers

The last answer is correct, translation of 2 units left followed by a with respect to the origin by a scale factor of 12.

Remember this, always translate before you dilate. Also, you would want to translate to the left, not to the right, so by process of elimination I came up with this answer,

The correct sequence of transformations that shows that △ABC is similar to △A′B′C′ is:

translation of 2 units left followed by a dilation with respect to the origin by a scale factor of 12.

What is Transformation?

A point, line, or geometric figure can be transformed in one of four ways, each of which affects the shape and/or location of the object.

In this case, we can see that a dilation with respect to the origin by a scale factor of 12 would stretch or shrink the triangle, but would not change the angles.

Therefore, we need to apply a translation first to move the triangle into the correct position.

So, we first translate the triangle 2 units left, which does not change its shape or size, but moves it to a position where it can be more easily compared to the other triangle.

Then, we apply a dilation with respect to the origin by a scale factor of 12, which stretches or shrinks the triangle but does not change its shape.

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Math question, I appreciate ANY help! :D

Answers

Radius = Diameter ÷ 2 = 33 ÷ 2 = 16.5 cm

[tex]\text{Volume = } \dfrac{4}{3} \pi (16.5)^3 = 18,816.57 \text { cm}^3[/tex]

what is equivalent to
[tex]13 - \sqrt{ - 81} [/tex]

Answers

√- 81 doesn't result in a rational number because you can't get a negative from squaring any number. Instead you get a number with an imaginary number. 

13 - √- 81 = 13 - 9i

Change to decimals and put in order of smallest to biggest
7/5 3/8 5/9 3/16

Answers

7/5=1.400
3/8=0.375
5/9=0.556
3/16=0.188

0.188, 0.375, 0.556, 1.400
3/16, 3/8, 5/9, 7/5

How is the expression (5 + y) ⋅8 described by its factors and terms?

A) It has two factors and the factor (5 + y) has one term.
B) It has three factors and the factor (5 + y) has one term.
C) It has three factors and the factor (5 + y) has two terms.
D) It has two factors and the factor (5 + y) has two terms.

Answers

The correct answer is D) it has two factors and the factor (5+y) has 2 terms.

The factors are what are multiplied to make the expression.  In this expression, (5+y) and 8 are multiplied, so those are the 2 factors.

The factor (5+y) has two terms, 5 and y.

perimeter with radius 14

Answers

[tex]360^o-150^o=210^o\\\\\dfrac{210^o}{360^o}=\dfrac{7}{12}[/tex]

[tex]P_{LQM}=\dfrac{7}{12}\cdot2\pi\cdot14=\dfrac{7}{3}\pi\cdot7=\dfrac{49\pi}{3}\ cm[/tex]

[tex]P_{QRP}=\dfrac{1}{2}\cdot14\pi=7\pi\ cm[/tex]

[tex]P_F=\dfrac{49\pi}{3}+7\pi+3\cdot14\approx\dfrac{49}{3}\cdot\dfrac{22}{7}+7\cdot\dfrac{22}{7}+42=166\dfrac{2}{3}\ cm^2[/tex]

Janet's gross salary is $2400 per month, what is her gross yearly salary

Answers

You can solve this by multiplying the gross per month by the anount of months in a year. 

2400x12=28800

$28,800 is the gross yearly salary.

David and Terri drove a small motorboat down a river with the current. The rate the boat traveled in still water was r miles per hour, and the current’s average speed was   c miles per hour. It took them 1.5 hours to travel 4 miles downstream. Which of the following equations can be used to represent this information?

Answers

speed of boat r mi/hr
speed of currect c mi/hr
speed downstream (c+r) mi/hr
but
distance= 4miles
time=1.5 hours
thus
speed=distance/time
hence:
4/1.5=(c+r)
thus
4=1.5c+1.5r
hence the answer is:
4=1.5c+1.5r

Given: ΔPSQ, PS = SQ PΔPSQ = 50 SQ – PQ = 1 Find: Area of ΔPSQ

Answers

The first part is to find the length SQ which is equal to SP.
Use the sine rule.
SQ/sin 65 = (SQ - 1)/Sin50
(sin50)/(sin 65) = (SQ-1)/SQ
0.8452(SQ) = SQ-1
0.1547SQ = 1
SQ = 6.46 
The formula to apply here is:
Area=1/2(SQ)(SQ)sin50
        = 0.5 × 6.46 × 6.46 × sin50
        = 15.984

When a transversal is perpendicular to two parallel lines, all the angles formed measure 90°. Explain why.

Answers

When two parallel lines are cut by a transversal, due to the natures of the different relationships among the angles, all of them will be either equal to the measure of the first angle or equal to that angle subtracted from 180.  If the transversal is perpendicular to the parallel lines, forms a right angle, then both the angle given and the angle subtracted from 180 will be 90.  This means all of the angles will be 90.

Final answer:

When a transversal intersects parallel lines perpendicularly, all angles formed are right angles (90°). This is due to perpendicular lines creating right angles and the angles at the intersection points being equal in measure because of the corresponding angle postulate.

Explanation:

When a transversal is perpendicular to two parallel lines, all the angles formed measure 90° because of the geometric properties of parallel lines and transversals. A transversal is a line that intersects two or more lines at distinct points. In the case of perpendicular transversals and parallel lines, the angles formed are called right angles.

If we consider two parallel lines, like railway tracks, they never meet and are always the same distance apart, maintaining a 180° straight line angle between them. A transversal that is perpendicular to these lines would intersect at points which lie along the x-axis if we consider the parallel lines to be along this axis. By the definition of perpendicular lines, the angles formed at the intersection points are 90°. As there are two intersection points on each parallel line, and due to the corresponding angle postulate, all four angles formed are equal in measure and hence are all right angles.

This can also be understood by considering vectors in physics, where if two vectors are perpendicular to each other, they form a right triangle, indicating a 90° angle between them. Knowing that parallel lines crossed by a perpendicular transversal produce angles of equal measure, and by the property that perpendicular lines form right angles, we can conclude that all angles formed in the described scenario are indeed 90°.

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