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2 years ago

I ONLY NEED THE CHECK PART PLEASEEEE HELP ASAPPP i’ll mark brainliest !!!

Mathematics

2 answers:

inysia [295]2 years ago

7 0

Answer:

x=-10

Step-by-step explanation:

(3x+2)/4=-7

3x+2=4×-7

3x=-28-2

3x=-30

x=-10

PolarNik [594]2 years ago

4 0

Answer:

$\frac{3(-10) + 2}{4}$ = $\frac{-30 + 2}{4}$ = $\frac{-28}{4}$ = -7

Step-by-step explanation:

<u>Solve:</u>

3x+2 = 4(-7)

3x+2 = -28

3x = -30

x = -10

<u>Check:</u>

$\frac{3(-10) + 2}{4}$ = $\frac{-30 + 2}{4}$ = $\frac{-28}{4}$ = -7

To check your answer to an equation, just plug your answer in place of x, and see if you get the same answer as the original equation.

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The sum of a number and 6% of itself is 42.4. find the number

kvasek [131]

Answer:

Step-by-step explanation:

6% of number = 6/100 × x = 6x/100 = 3x/50

Sum of the number and 6% of itself = 42.4

x + (3x/50) = 42.4

(50x+3x)/50 = 42.4

53x = 42.4 × 50

53x = 2120

x = 2120/53

x = 40

8 0

2 years ago

Read 2 more answers

Hayden had 2 and 1/2 gallons of water in his watering can. The seed packet said to use 1/4 of a gallon for peppers and 5/8 of a

Flauer [41]

Answer:

7/8 of a gallon

Step-by-step explanation:

First find a common denominator for each of the values, in this case eighths. Next, add the total water used for the tomatoes and peppers (you'll get 7/8 gallons). Then, convert the 2 and a half gallons to eighths, getting 20/8 of a gallon. Next, subtract the 7/8 from the 20/8; getting 13/8. Since you need to find the amount of water used for the lettuce, subtract the last value from 3/4 gallons (or 6/8)

8 0

2 years ago

Please help answering questions 215 and 216.

kodGreya [7K]

Problem 215

Check out the attached image. Line up the letters ABC and CDE so the first set of letters are over the second set of letters. Order is important here. Note how A corresponds to C (second C), B corresponds to D, and (the first) C corresponds to E.

We have this mapping:

A <--> C

B <--> D

C <--> E

This means...

Angle BAC corresponds to Angle DCE (red angles)

Angle ABC corresponds to Angle CDE (blue angles)

Angle BCA corresponds to Angle DEC (green angles)

It also means...

Side BC corresponds to Side DE (red sides)

Side AC corresponds to Side CE (blue sides)

Side AB corresponds to Side CD (green sides)

Check out the attached image which I hope clears up any confusion you may have. Often I think it helps to represent stuff like this in a visual way.

============================================

Problem 216

Answer: True

Since triangle ABC is congruent to triangle DEF, this means that side AB is congruent to side ED. These are corresponding sides. Since AB = 6, this means ED = 6 as well.