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3 years ago

12

Natalie earned a grade of 79 on her multiple choice science final that had a total of 200 problems. How many problems on the fin

al exam did Natalie answer correctly?

1 answer:

Semenov [28]3 years ago

4 0

Answer:

158 correct

Step-by-step explanation:

79 out of 100 = 158 out of 200

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Plz help! (._.)

mixas84 [53]

Stuck on same problem!

4 0

3 years ago

Solve for x <br> Need help asap

vlabodo [156]

Answer:

$x=55$

Step-by-step explanation:

Corresponding angles of two parallel lines are always equal. The angle on "top" of $2x+6$ corresponds with the angle marked as $x+9$ . Therefore, its measure must also be $x+9$ .

Since these two angles form one side of a line which has 180 degrees, we have the following equation:

$2x+6+x+9=180$

Combine like terms:

$3x+15=180$

Subtract 15 from both sides:

$3x=165$

Divide both sides by 3:

$x=\frac{165}{3}=\boxed{55}$

3 0

3 years ago

If f(a)=(a•a•a)-(a•a) + a-1 what is the value of f(-3)?

Elena L [17]

Answer:

-40

Step-by-step explanation:

f(a) = a³ - a² + a - 1

f(-3) = (-3)³ - (-3)² + (-3) - 1

f(-3) = (-27) - (9) + (-3) -1

f(-3) = -27 - 9 -3 - 1

f(-3) = -40

3 0

3 years ago

Gary’s is a small publishing company that publishes math books. The production costs include a one-time cost for editing the boo

sveta [45]

Y=20x -1500, y equals the prophet, x is the number of books, 20 is the money made after taking out the cost of production, 1500 is a cost that only occurs once.

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3 years ago

5.) $28,000 invested at a rate of 4% compounded annually

liq [111]

Answer:

ok so we know the amount we know the interest amount but we do know know the period of time so the equation would look like this

28000(0.4)T=I

T=Time

I=interest

3 0

3 years ago