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4 years ago

Evaluate 5x + (-2x 2) for x = 3. a. 21 b. -3 c. 11

Mathematics

2 answers:

Vladimir79 [104]4 years ago

5 0

Answer:

C. 11

Step-by-step explanation:

Assuming the problem is 5x + (-2 * 2) with x equals 3.

5(3)+(-2*2)

15+(-4)=

15-4=11

Fynjy0 [20]4 years ago

5 0

Answer: -3

Step-by-step explanation:

got it right.

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What is the value of x? x−2/5=7 Enter your answer in the box in simplest form. x =

fenix001 [56]

Answer:

Your answer is 17.5

Step-by-step explanation:

Turn your fraction into a decimal

2/5 = 0.4

Next multiply my given answer by 0.4

17.5 x 0.4 = 7

Therefore 17.5 is your final answer

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3 years ago

During a biology course, Jacobi learned that the diameter of red blood cells can be written as 6.5x10 to the -3 power millimeter

madreJ [45]

Answer:

$\bold{0.0065}$

Step-by-step explanation:

Hi there!

Let's convert numbers in scientific notation to standard form.

$\bold{6.5x10^{-3} }$ => scientific notation

First, the coefficient is $\bold{6.5}$ .

So, we know part of our number.

Now, let's look at the exponent:

$\bold{-3}$

First of all, the exponent is $\bold{NEGATIVE}$ .

This means that we'll move the decimal point to the $\bold{left}$ .

Then, the 3 means we'll move the decimal point 3 units.

So, our number looks like so:

$\bold{0.0065}$

Hope it helps! Enjoy your day!

~Just a teen willing to help others

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3 years ago

Mary buys a reel of thread for sewing. There are 10 m of thread on the reel. She uses 210 cm. How much is left on the reel in ce

galben [10]

10meters=1000cm
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4 years ago

Name the Property of Congruence that justifies the statement If XY = WX then WX = XY ?

Orlov [11]

I believe below are the choices that can be found else where.

a.symmetric property
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Alex73 [517]

Answer:i think is the fourth one or the fifth one.

Step-by-step explanation:

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3 years ago

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