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4 years ago

Need help! mind helping?

Mathematics

2 answers:

Pavel [41]4 years ago

7 0

Answer:

1. 7,000

2. 5,600,000,000

3. 4,000,000

Step-by-step explanation:

order of operations just to the exponents first then multiply. P.S. its ok the use a calculator only if you do the exponents first.

Vinil7 [7]4 years ago

6 0

Answer:

1. 70,000

2.5,600,000,000

3.4,000,000

Step-by-step explanation:

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Write a paragraph, flowchart, or 2-column proof for the following:

lawyer [7]

Answer:

see the procedure

Step-by-step explanation:

we know that

m∠1+m∠2=180° -----> supplementary angles (form a linear pair)

we have

m∠1=27°

substitute the measure of m∠1 in the equation above and solve for m∠2

27°+m∠2=180°

Subtract 27° both sides

27°+m∠2-27°=180°-27° ----> by subtraction property of equality

m∠2=153°

7 0

4 years ago

Graph the system of inequalities.<br><br> (x-y< or = to 1<br> (x+2y < 4

kkurt [141]

Answer:

$y\ge \:-1+x,\:y$

The graph is attached below.

Step-by-step explanation:

Given the system of inequalities.

$\begin{bmatrix}x-y\le \:1\\ x+2y$

Isolate y for $x-y\le \:1$

$x-y\le \:1$

subtract x from both sides

$x-y-x\le \:1-x$

simplify

$-y\le \:1-x$

Multiply both sides by -1 (reverse the inequality)

$\left(-y\right)\left(-1\right)\ge \:1\cdot \left(-1\right)-x\left(-1\right)$

simplify

$y\ge \:-1+x$

now solving

$x+2y < 4$

isolate y for $x+2y < 4$

$x+2y < 4$

subtract x from both sides

$x+2y-x$

simplify

$2y$

Divide both sides by 2

$\frac{2y}{2}$

Simplify

$y$

Graphing Method:

1. Graph each inequality separately

2. Choose a test point to determine which side of the line needs to be shaded

3. The solution to the system will be the area where the shadings from each inequality overlap one another.

Thus,

$y\ge \:-1+x,\:y$

The graph is attached below.

4 0

3 years ago

What are the like terms in the algebraic expression? Negative a squared b + 6 a b minus 8 + 5 a squared b minus 6 a minus b Nega

irinina [24]

Answer:

The like terms are: $a^{2}b,\ ab,\ \teaxt{and}\ a$

Step-by-step explanation:

The expression is:

$-a^{2}b+6ab-8+5a^{2}b-6a-b-a^{2}b-6a-a^{2}b+5a^{2}b+6ab+5a^{2}b+6ab-6a$

Collect the like terms as follows:

$-a^{2}b+6ab-8+5a^{2}b-6a-b-a^{2}b-6a-a^{2}b+5a^{2}b+6ab+5a^{2}b+6ab-6a$

$=(-a^{2}b+5a^{2}b-a^{2}b-a^{2}b+5a^{2}b+5a^{2}b)+(6ab+6ab+6ab)-(6a-6a-6a)-b-8$

$=12a^{2}b+18ab+18a-b-8$

Thus, the final expression is $12a^{2}b+18ab+18a-b-8$

The like terms are: $a^{2}b,\ ab,\ \teaxt{and}\ a$ .

3 0

3 years ago

Read 2 more answers

Do any of you know any written answers to the Probability Unit Test for 7th grade? I need a little help!

andrew-mc [135]

All tests across the world are different even if they're the same subject and stuff. I think it's easier for you to study, so if you have any questions about them please post them on Brainly!

5 0

3 years ago

There are about 16 km in 10 miles about how many kilometers are in 5 miles

Alex_Xolod [135]

Answer:

8km

Step-by-step explanation:

10 miles = 16 km

1 mile = 16/10km = 1.6km

5 miles = 1.6*5 km

= 8 km

6 0

3 years ago