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4 years ago

Graph a line that contains the point (-7,-4) and has a slope of -2/3 pls help

1 answer:

6 0

Use Y=-2/3x + b
and then plug in (-7,-4)
-7 is x, so plug that in for x
Y=-2/3(-7) + b
and plug in y, -4
-4=-2/3(-7) +b
plug into calculator and then solve algebraically!
b doesn’t mean anything, it’s just what i used for the y axis, really you could use any letter

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A scientist is cooling a liquid at a steady rate. The temperature of the liquid changed by −82 1/2 °C over 2 1/5 minutes. What w

dangina [55]

Answer: $37.5^{\circ}$ or $37\dfrac{1}{2}^{\circ}$

Step-by-step explanation:

Given : The temperature of the liquid changed by $-82\dfrac{1}{2}^{\circ}C$ over $2\dfrac{1}{5}$ minutes.

We can write $[tex]82\dfrac{1}{2}=\dfrac{82\times2+1}{2}=\dfrac{165}{2}$

$2\dfrac{1}{5}=\dfrac{11}{5}$

Now, the statement becomes ,

The temperature of the liquid changed by $-\dfrac{165}{2}^{\circ}C$ over $\dfrac{11}{5}$ minutes.

i.e. temperature changed in $\dfrac{11}{5}$ minutes = $-\dfrac{165}{2}^{\circ}C$

Now, by Unitary method,

The temperature changed in 1 minute = $\dfrac{165}{2}\times\dfrac{5}{11}^{\circ}C$

⇒ The temperature changed in 1 minute = $37.5^{\circ}$ or $37\dfrac{1}{2}^{\circ}$

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3 years ago

What is the simplest form of the product cube root4x^2*cube root8x^7

Illusion [34]

Answer:

f(x) = $2^{\frac{5}{3} }x^{3}$ is the simplest expression

Step-by-step explanation:

We are given an expression and we are supposed to find the simplest form of the given expression.

The given expression is

f(x) = $\sqrt[3]{4x^{2} } \times \sqrt[3]{8x^{7} }$

Since the cube root is common we can multiply the quotient inside the radical sign.

f(x) = $\sqrt[3]{32x^{(2+7)} }$

= $\sqrt[3]{32x^{9} }$

= $2^{\frac{5}{3} }\times x^{\frac{9}{3} }$

= $2^{\frac{5}{3} }x^{3}$

f(x) = $2^{\frac{5}{3} }x^{3}$ is the simplest expression

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3 years ago

An engineering student answered 58 questions correctly on a 100-question trigonometry test.

finlep [7]

If you are trying to find the percentage he received: 58/100

Total correct divided by total questions.

You get .58 or

58% by moving the decimal to spaces to the right.

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3 years ago

Jonathan runs 4 days a week. Each day, he runs 4 laps that are each 2 miles long. He spends 208 minutes running each week. He ru

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So what is the question?

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3 years ago

Match the independent variable, dependent variable and constant for the following statement.

den301095 [7]

Independent: cell phone plan
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4 years ago