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steposvetlana [31]
4 years ago
6

Solve for x.3(x + 2) + 4(x - 5) = 10

Mathematics
2 answers:
Viefleur [7K]4 years ago
7 0
3(x + 2) + 4(x - 5) = 10
Distribute the outside numbers in.
(3x + 6) + (4x - 20) = 10
Combine like terms.
7x - 14 = 10
Isolate the 7x by adding 14 to both sides.
7x = 24
Divide by 7 on both sides to get x alone.
x = 3.42857
Mkey [24]4 years ago
4 0
X = 3.428571429 is the answer that I got
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50 POINTS Vanessa has 6 dimes and 2 pennies. Joachim has 1 dollar, 3 dimes, and 5 pennies. Jimmy has 5 dollars and 7 pennies. Th
Yakvenalex [24]

Vanessa: a dime = 10 cents = 0.10

A penny = 1 cent = 0.01

6 x 0.10 = 0.60

2 x 0.01 = 0.02

Total = 0.60 + 0.02 = 0.62

Joachim : a dollar = 1.00

3 x 0.10 = 0.30

5 x 0.01 = 0.05

Total = 1.00 + 0.30 + 0.05 = 1.35

Jimmy: total = 5.00 + 0.07 = 5.07

Total of all 3: 0.62 + 1.35 + 5.07 = $7.04

This is less than $8 so they don’t have enough.

They need: 8.00 - 7.04 = $0.96 more

3 0
3 years ago
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On New years Eve, the temperature fell by 24 degrees in a span of 6 hours. By how many degrees did the temperature fall every ho
DochEvi [55]

Answer:

4

Step-by-step explanation:

24/6

3 0
3 years ago
Let fat be the explanatory variable and calories be the response variable; which scenario best describes ŷ = 121 + 1.42x?
emmasim [6.3K]

Using <u>linear function concepts</u>, it is found that the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which represents by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0.

In this problem:

  • The explanatory variable fat is the input.
  • The response variable calories is the output.

The equation is:

y = 121 + 1.42x

  • The slope is of 1.42, which means that the amount of calories increases by 1.42 when the amount of fat increases by 1 gram.
  • The y-intercept is of 121, which means that if there are 0 grams of fat, there will be 121 calories.

Thus, the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A similar problem is given at brainly.com/question/16302622

8 0
3 years ago
-x=-24 <br> it’s for pre-algebra
labwork [276]
So -x can also represent -1

You want to divide both sides by -1 so you can get -x to be just x

-x divided by -1 = x
-24 divided by -1 = 24

Your answer is x=24
8 0
4 years ago
Select all of the transformations that could change the location of the asymptotes of a cosecant of secant
77julia77 [94]

Answer:

phase shift and period change

Step-by-step explanation:

just did it

4 0
3 years ago
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