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3 years ago

Simplify the expression 2j+4j+j+7

Mathematics

1 answer:

Alina [70]3 years ago

3 0

Answer:

7j+7

Step-by-step explanation:

2j+4j+j+7

combine like terms

7j+7

Sorry I don't really know how to explain it, but you just have to combine terms with the same unit

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Susan, Deon, and Felipe sent a total of 160 text messages during the weekend. Felipe sent 4 times as many messages as Susan. Deo

Romashka [77]

Answer:

Susan sent 25 messages

Felipe sent 100 messages

Deon sent 35 messages

Step-by-step explanation:

160 = x + 4x + x + 10

160 = 6x + 10

6x = 150

x = 25

7 0

3 years ago

5.708 x 10v-8 in standard form Calculator won’t answer it..

Troyanec [42]

Hi Sebastian0113,

Your Question:

5.708 x 10^-8 in standard form

Solution:

Decimal Form:

To solve this equation just divide 5.708 by 10 8 times.

= 5.708 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10

= 0.000000005708

5.708 x 10^-8 = 0.000000005708

Standard Form:

5.708 x 10^8

5.708 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10

= 570,800,000

Answer:

Standard Form - 570,800,000

Decimal Form - 0.0000005708

8 0

3 years ago

Read 2 more answers

15 points! What is the scale factor of the dilation?

maw [93]

Answer: $\frac{1}{2}$

Step-by-step explanation:

Use the formula for calculate the distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Calculate the distance AB. Substitute the coordinates into the formula. Then:

$d_{AB}=\sqrt{(8-0)^2+(8-(-7))^2}$

$d_{AB}=17$

Calculate the distance A'B'. Substitute the coordinates into the formula. Then:

$d_{A'B'}=\sqrt{(2-6)^2+(1-5-(-6))^2}$

$d_{A'B'}=\frac{17}{2}$

As you can see, the distance A'B' is the distance AB multiplied by 1/2. Therefore, this is the scale factor.

5 0

3 years ago

two citys are 91 miles from each other. How far apart would the cities be on a map that has a scale of 0.8 inches: 6.5 miles?

lukranit [14]

Answer:

11.2 ''

Step-by-step explanation:

*cities

$\frac{91}{x} :\frac{6.5}{0.8} \\x=0.8*91/6.5$

7 0

3 years ago

Simplify 3(2x - 5). -6x- 15 6x- 15 6x- 8 5x- 2

Alex787 [66]

- - Let's solve:

We need to evaluate.

$3(2x-5)$

$=3*2x+-5$

$=3*2x+3*-5$

$6x-15$ for your final answer.

4 0

3 years ago

Read 2 more answers