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4 years ago

Solve for x x+3over2+ 2x over7 equal7

Mathematics

1 answer:

coldgirl [10]4 years ago

5 0

(1+ 3/2 + 2/7) x = 7

X= 7/( 1+ 21/14 + 4/14)

X = 7 / 39/14

X= 98/39

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Consider the polynomial below.

kotykmax [81]

Answer:

(-4x - 2)(-5x) + (-4x - 2)(3)

Step-by-step explanation:

Your polynomial is

(-4x - 2)(-5x + 3)

The distributive property states that

a(b + c) = ab + ac

Let a = -4x - 2. Then

(-4x - 2)(-5x + 3) = a(5x + 3) = a(-5x) + a(3)

Substitute the value of a.

a(-5x) + a(3) = (-4x - 2)(-5x) + (-4x - 2)(3)

You have just distributed the first binomial (-4x - 2) among the terms of the second binomial.

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3 years ago

Which statement is not always true ?

Alona [7]

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3 years ago

A2b -b2 a=4 and b= -7

cestrela7 [59]

Step-by-step explanation:

hope this helps you dear friend.

8 0

3 years ago

A college student Earned $6500 during summer vacation working as a waiter. The student invested Part of the money at 10% and the

Juliette [100K]

Answer:

The amount invested at 10% rate is $ 2200

Step-by-step explanation:

Given as :

The total amount earn by student = $6500

The total interest received at the end of year = $607

Let the amount invested at 10% rate = $x

So, The amount invested at 9% rate = ($6500 - $x)

Let the time for which money invested = 1 year

<u>Now from Simple Interest method :</u>

SI = $\frac{principal\times Rate\times Time}{100}$

Or, SI_1 + SI_2 = $\frac{x\times 10\times 1}{100}$ + $\frac{(6500-x)l\times 9\times 1}{100}$

Or, SI_1 + SI_2 = $(\frac{10x}{100})+\frac{(6500-x)\times 9}{100}$

Or, $607 × 100 = 10x + (6500-x) × 9

Or, $60700 = 10x- 9x + 58500

Or, $60700 - $58500 = x

Or , 2200 = x

∴ x = 2200

So, The amount invested at 10% rate = $x = $ 2200

Hence The amount invested at 10% rate is $ 2200 Answer

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OleMash [197]

seth2cold let’s be moots

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3 years ago