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2 years ago

Zane took three typing tests and recorded the results as shown.

Mathematics

1 answer:

MAVERICK [17]2 years ago

6 0

Answer:

Step-by-step explanation:

For test A, the unit rate is 30 words per minute divided by 4 minutes, or 7.5 words per minute.

Unit rate = 78 words/15 minutes = 5.2 words per minute for test B.

The unit rate for test C is 99 words/22 minutes, or 4.5 words per minute.

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What is the value of y:35x+120y=500

Vladimir79 [104]

To get y you can move the x's to one side, so 120y=500-35x
then you can isolate the y, y= 500/120-35x/120

:)

8 0

3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!! I CANNOT RETAKE THIS!! Simplify.

NNADVOKAT [17]

Answer: $\frac{2x(5x + 1)}{4x - 1}$

Step-by-step explanation:

$\frac{4x^{3}-12x^{2}}{4x^{2}+7x - 2}$ ÷ $\frac{2x^{2}-6x}{5x^{2}+11x + 2}$

= $\frac{4x^{2}(x - 3)}{(4x - 1)(x + 2)}$ ÷ $\frac{2x(x - 3)}{(5x + 1)(x + 2)}$

= $\frac{4x^{2}(x - 3)}{(4x - 1)(x + 2)}$ x $\frac{(5x + 1)(x + 2)}{2x(x - 3)}$

= $\frac{2x(5x + 1)}{4x - 1}$

8 0

3 years ago

A photo of a painting measured 13 x 17 inches the scale of the photo to the original painting is 1 inch to 3 inches. What is the

bulgar [2K]

Answer:

29 × 51 inches

Step-by-step explanation:

If the scale is ...

photo : painting = 1 : 3

then each dimension of the painting is 3 times the corresponding dimension of the photo. The painting is (3×13) by (3×17) inches, or 39 × 51 inches.

5 0

3 years ago

The line passing through (-2,5) and (2,p) has a gradient of -1/2. Fnd the value of p

makkiz [27]

Given:

The line passing through (-2,5) and (2,p) has a gradient of $-\dfrac{1}{2}$ .

To find:

The value of p.

Solution:

If a line passes through two points, then the slope of the line is:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

The line passing through (-2,5) and (2,p). So, the slope of the line is:

$m=\dfrac{p-5}{2-(-2)}$

$m=\dfrac{p-5}{2+2}$

$m=\dfrac{p-5}{4}$

It is given that the gradient or slope of the line is $-\dfrac{1}{2}$ .

$\dfrac{p-5}{4}=-\dfrac{1}{2}$

On cross multiplication, we get

$2(p-5)=-4(1)$

$2p-10=-4$

$2p=-4+10$

$2p=6$

Divide both sides by 2.

$p=3$

Therefore, the value of p is 3.

4 0

2 years ago

There are 9 1/5 gallons of water in Alan’s fish tank. If Alan adds 9 3/5 gallons more, how many gallons will there be in all?

cupoosta [38]

9 1/5 + 9 3/5 = 18 4/5 gallons

7 0

3 years ago