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2 years ago

What is the value of x in the equation 4 x plus 8 y equals 40, when y equals 0. 8? 4. 6 8. 4 10 12.

Mathematics

1 answer:

chubhunter [2.5K]2 years ago

3 0

Answer:

x = 8.4

Step-by-step explanation:

8 times 0.8 is 6.4, then 40 - 6.4 is 33.6, and 33.6 divided by 4 is 8.4

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If a man drives 600km from Johannesburg to Durban. He starts his journey with a full tank of petrol. If the man drives at an ave

arlik [135]

Answer:

I think it's 5

Step-by-step explanation:

im not sure

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2 years ago

The length of a rectangle is one unit more than the width. if the area is 30 square units find the dimensions of the rectanhgle

solmaris [256]

Width = w

Length = w + 1

Area = 30

w(w+1) = 30

w² + w = 30

w² + w - 30 = 0

w² + 6w - 5w - 30 = 0

w(w + 6) -5(w + 6) = 0

(w + 6)(w - 5) = 0

w = 5 or -6

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3 years ago

Two students in your class, Ralph and Bobby, are disputing a function. Ralph says that for the function, between x = −1 and x =

marshall27 [118]

Answer:

Ralph and Bobby both are correct about slope. Because slope for both is 0.

Step-by-step explanation:

We are given a function that has two values of x's between x = −1 and x = 1.

And the average rate of change between x=-1 and x=1 is 0.

We know that x=-1 and x=1 are the points on x-axis.

If we joint x=-1 and x=1 points, we would get a straight line horizontal line on x-axis.

And note, the slope of a horizontal line is 0 always.

So, according to Bobby the graph goes up through a turning point, and then back down that means the point (-1,0) gets horizontally shift by 2 unit at (1,0).

Therefore, rise/run = 0/2, that is also equal to 0.

Therefore, Ralph and Bobby both are correct about slope.

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7 0

2 years ago

Find the distance between the points (0, 0) and (6, -8). 4 √28 10

kvasek [131]

Answer:

Step-by-step explanation:

The formula for finding the distance between 2 points (x1, y1) and (x2, y2) is

d = √[(x2 - x1)² + (y2 - y1)²]

Here (x2, y2) = (6, -8) and (x1, y1) = (0, 0)

Plugging them gives us

d = √[(6 - 0)² + (-8 - 0)²]

d = √[(6)² + (-8)²]

d = √[36 + 64]

d = √100

d = 10

6 0

3 years ago

The bases of the trapezoid are 6 and 10. The height is 4. Find the area.

ollegr [7]

Answer

b. 32 sq. unit

Step-by-step Explanation

The area of the trapezoid is given by

$A = \frac{1}{2} (b_{1} + b_{2}) \times h$

We substitute the given values into the formula to obtain;

$A = \frac{1}{2}(10 + 6) \times 4$

Simplify

$A = \frac{1}{2} (16) \times 4$

$A = 16 \times 2$
Hence the area is

$A = 36 \: sq \: units$

6 0

3 years ago