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3 years ago

What is the slope of the line on the graph below?

Mathematics

2 answers:

olganol [36]3 years ago

7 0

Take two ordered pairs along the line and calculate the change in y over change in x or rise over run.

(0,-5)(3,-4)

-4-(-5) / (3-0)
1/3

Final answer: 1/3

lakkis [162]3 years ago

5 0

Find two pairs

(0,-5)(3,-4)

Find the gradient

(0-3)/(-5--4)
=3

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80 times 1.5 that’s all

Evgesh-ka [11]

What?

explanation: ..

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3 years ago

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What is the solution to this equation?

Diano4ka-milaya [45]

Answer:

C. x=13

Step-by-step explanation:

add the 13 to the -4 and you will get your 9

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3 years ago

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Please someone help me and explain this question to me (the last question starting with a straw)

Anastasy [175]

Each straw is 4-1/8 inches long.
You have one gigantic piece of straw material, 123-3/4 inches long.
How many straws can you cut it up to make ?

===> (123-3/4) divided by (4-1/8) straws.

Each one costs $0.015 to make.
So, once you find the number of short straws you have,
multiply

===> (the number of short straws) x ($0.015) .

That'll tell you how much it costs to make all of them.

Now you know how to do it on your own.
If you don't get 30 straws and $0.45 , please try again.

6 0

3 years ago

Round the answer to the nearest

kykrilka [37]

By knowing the blood pressure and applying the quadratic formula, the age of a man whose normal blood pressure is 129 mm Hg is 40 years old.

<h3>How to use quadratic equations to determine the age of a man in terms of blood pressure</h3>

In this problem we have a quadratic function that models the blood pressure as a function of age. As the latter is known, we must use the quadratic formula to determine the former:

129 = 0.006 · A² - 0.02 ·A + 120

0.006 · A² - 0.02 · A - 9 = 0

$A = \frac{0.02 \pm \sqrt{0.006^{2}-4\cdot (0.006)\cdot (- 9)}}{2\cdot (0.006)}$

A = 1.667 + 38.733

A = 40

By knowing the blood pressure and applying the quadratic formula, the age of a man whose normal blood pressure is 129 mm Hg is 40 years old.

To learn more on quadratic equations: brainly.com/question/1863222

#SPJ1

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2 years ago

Find the angle between the vectors u=i-9j and v=8i+5j

Katyanochek1 [597]

Answer: $\cos^{-1} \left(\frac{-37}{\sqrt{7298}} \right) \approx 115.665^{\circ}$

Step-by-step explanation:

$u \cdot v=(1)(8)+(-9)(5)=-37\\\\|u|=\sqrt{1^{2}+(-9)^{2}}=\sqrt{82}\\\\|v|=\sqrt{8^{2}+5^{2}}=\sqrt{89}\\\\\cos \theta=\frac{-37}{\sqrt{82}\sqrt{89}}\\\\\theta=\cos^{-1} \left(\frac{-37}{\sqrt{82}\sqrt{89}} \right)\\\\\theta=\boxed{\cos^{-1} \left(\frac{-37}{\sqrt{7298}} \right) \approx 115.665^{\circ}}$

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2 years ago