3 years ago

Show each step of your work. Solve -3x – 2 = 19.

Mathematics

1 answer:

IgorLugansk [536]3 years ago

5 0

Answer:

Step-by-step explanation:

-3x -2 = 19

+3x +3x

-2 = 19 + 3x

-19 -19

-21 = 3x

Divided by 3

-7 = x

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20.25−912 +11<br> Simplify

OLga [1]

Answer: -880.75

Step-by-step explanation:

Step 1: Simplify 20.25 - 912 - 912 to -891.75

-891.75+11−891.75+11

Step 2: Simplify.

-880.75

4 0

4 years ago

Kenny had 5/7 more trading cards than Lee. After Kenny collected 50% more trading cards, he had 220 more trading cards than Lee.

Monica [59]

Answer:

140 cards

Step-by-step explanation:

-Let x be the total number of trading cards Lee has.

-Therefore, each person has:

$Lee= x\\\\Kenny=1\frac{5}{7}x$

#Kenny collects 50% more. We multiply his current amount by 1.5times:

$=1\frac{5}{7}\times 1.5\\\\=2\frac{4}{7}x$

#We are given that Kenny's new number is 220 more than Lee's x. We therefore equate and solve as below:

$2\frac{4}{7}x-x=220\\\\1\frac{4}{7}x=220\\\\=140$

Hence, Lee had 140 cards

5 0

3 years ago

A group of 25 people are going to run a race. The top 8 finishers advance to the finals. Determine the number of possible outcom

satela [25.4K]

Answer:

n[total]=25

n[top finishers]=8

the number of possible outcome

= $\frac{25 \times 24 \times 23 \times 22 \times 21 \times 20 \times 19 \times 18}{8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1} = 1081575$ outcomes

6 0

3 years ago

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What fraction of the rectangle is shaded? PLS PLS PLS help ASAP! Ty

Vaselesa [24]

Answer:

2/3

Step-by-step explanation:

7 0

2 years ago

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What is the value of x in the equation 4x+8y=40 when y=0.8

GREYUIT [131]

Substitute in 0.8 for y.

$4x+8y=40 \\ \\ 4x + 8(0.8) = 40 \\ \\ 4x + 6.5 = 40 \\ \\ 4x = 40 - 6.4 \\ \\ 4x = 33.6 \\ \\ x = 8.4 \\ \\$

The final result is: x = 8.4.

3 0

4 years ago

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