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4 years ago

Help on questión 13 please

Mathematics

1 answer:

elena-s [515]4 years ago

4 0

So make a picture. so i could help u more

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Solve for x ! problems attached please help!!

vampirchik [111]

Answer:

7. $x\le 8$

8. $x\le 1.7$

9. $-0.2\le x\le 2$

10. $3< x\le 4$

Step-by-step explanation:

7. Solve for x:

$4x+7-x\le 31$

Separate variable and numbers into different sides of inequality:

$4x-x\le 31-7\\ \\3x\le 24$

Divide the inequality by 3:

$x\le 8$

8. Solve for x:

$2(x-3)+8x\le 11$

Eliminate the brackets:

$2x-6+8x\le 11$

Separate variable and numbers into different sides of inequality:

$2x+8x\le 11+6\\ \\10x\le 17$

Divide the inequality by 10:

$x\le 1.7$

9. Solve for x:

$-7x\le 3x+2\le 8$

Solve two inequalities $-7x\le 3x+2$ and $3x+2\le 8$ separately:

$-7x\le 3x+2\\ \\3x+2\ge -7x\\ \\3x+7x\ge -2\\ \\10x\ge -2\\ \\x\ge -0.2$

and

$3x+2\le 8\\ \\3x\le 8-2\\ \\3x\le 6\\ \\x\le 2$

So,

$-0.2\le x\le 2$

10. Solve for x:

$8$

Add 1:

$8+1$

Divide by 3:

$3< x\le 4$

6 0

3 years ago

Read 2 more answers

What is the value of the expression 16 + 4 • 5 – 6 ÷ 2?

wolverine [178]

C.33 because using the process of pemdas. 4×5 = 20. 16 + 20 - 6 ÷ 2. Then 6÷2 = 3. 16+ 20 - 3 = 33

5 0

4 years ago

17 = 9 + 2r<br><br> r = what

Simora [160]

Answer:

r = 4

Step-by-step explanation:

17 = 9 + 2r subtract both sides by 9

8 = 2r divide both sides by 2

4 = r

7 0

3 years ago

Read 2 more answers

Suppose you own a car that gets 35 miles per

SSSSS [86.1K]

Answer:

$30

Step-by-step explanation:

840/35 = 24 gallons

24*1.25 = 30 dollars

7 0

2 years ago

Determine the value of the account if the initial investment is $8,000 compounded monthly at a rate of 6% after 10 years

MatroZZZ [7]

Answer:

$14,555.17

Step-by-step explanation:

initial investment, p = $8,000

rater, r = 6% = 0.06

Number of times compounded yearly = 12

Time, t = 10 years

Amount, A = p(1 + r/n)^tn

A = 8000(1 + 0.06/12)^10*12

A = $14,555.17

8 0

3 years ago