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2 years ago

14

Can someone please help me? I don’t understand this

1 answer:

vekshin12 years ago

3 0

Answer:

[see below]

Step-by-step explanation:

Substitute the given value into the function and then solve.

<h3>With -7:</h3>

$f(x)=6x\\\\f(-7)=6*-7\\\\\boxed{f(-7)=-42}$

<h3>With -1: </h3>

$f(x)=6x\\\\f(-1)=6*-1\\\\\boxed{f(-1)=-6}$

<h3>With 1: </h3>

$f(x)=6x\\\\f(1)=6*1\\\\\boxed{f(1)=6}$

<h3>With 7: </h3>

$f(x)=6x\\\\f(7)=6*7\\\\\boxed{f(7)=42}$

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7.5+2.95=10.45
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2 years ago

Round 3,942,588 to the nearest thousand.

olchik [2.2K]

Hey there! :D

3,942,588

The thousandths is where the 2 is.

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2 years ago

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Lynna [10]

Answer:

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this is the product.

Step-by-step explanation:

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2 years ago

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Fiona wrote the linear equation y = 2/5 x – 5. When Henry wrote his equation, they discovered that his equation had all the same

Hoochie [10]

we have

$y=\frac{2}{5}x-5$

Let's Isolate the variable y in each of the cases and then compare with Fiona's equation to determine the solution of the problem

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Multiply by $4$ both sides

$4x-5y= 25$

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Divide by $5$ both sides

$y=\frac{4}{5}x-5$

therefore

the case A) is not equal to Fiona's equation

case B) $x-\frac{5}{2}y= \frac{25}{4}$

Multiply by $4$ both sides

$4x-10y= 25$

$10y=4x-25$

Divide by $10$ both sides

$y=\frac{2}{5}x-2.5$

therefore

the case B) is not equal to Fiona's equation

case C) $x-\frac{5}{4}y= \frac{25}{2}$

Multiply by $4$ both sides

$4x-5y= 50$

$5y=4x-50$

Divide by $5$ both sides

$y=\frac{4}{5}x-10$

therefore

the case C) is not equal to Fiona's equation

case D) $x-\frac{5}{2}y= \frac{25}{2}$

Multiply by $2$ both sides

$2x-5y= 25$

$5y=2x-25$

Divide by $5$ both sides

$y=\frac{2}{5}x-5$

therefore

the case D) is equal to Fiona's equation

<u>the answer is</u>

$x-\frac{5}{2}y= \frac{25}{2}$

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2 years ago

Read 2 more answers

I need help on number 18

zloy xaker [14]

Answer:

Volume = 35185.8 $km^{3}$

Step-by-step explanation:

Recall the formula for the volume of a cone: $Volume = \pi R^{2} \frac{h}{3}$

Where R is the radius of the cone's circular base (in your case half of 80 km,(that is 40 km)

And h stands for the height of the cone (in your case 21 km)

We replace such in the formula and calculate its final value:

$Volume = \pi 40^{2} \frac{21}{3} = \pi 1600 \frac{21}{3} = \pi 1600 (7) = 35185.83772...$

We round it to the number of decimals your problem request (let's say to one decimal) and also include the cubic units:

Volume = 35185.8 $km^{3}$

7 0

2 years ago