3 years ago

Simplify -2+5(2+6r) I’ll mark brainlist

Mathematics

1 answer:

Dmitriy789 [7]3 years ago

6 0

Answer:

10+30r

Step-by-step explanation:

-2+5(2+6r)

expand 5(2+6r)

5x2=10

(6r)x(5)=30r

so it is 10+30r

then add that to -2

8+30r

Hope that helps :)

You might be interested in

Plz help Factor the expression using the GCF 16m + 20n

lara [203]

Answer:

4 (4m+5n)

Step-by-step explanation:

hope this helps

4 0

3 years ago

What is an equation that models the sequence 400, 200, 100, 50, ?

katrin [286]

N / 2

400 / 2 = 200
200 / 2 = 100
100 / 2 = 50
50 / 2 = 25
25 / 2 = 12.5

4 0

3 years ago

Bethany paid $408.75 for a pair of diamond stud earrings. The sale price was $375. What is the Percent of Sales Tax she paid for

9966 [12]

Answer:

She paid 9% of sales tax

Step-by-step explanation:

The sale price of diamond = $375

Let x be percent of sales tax

So, amount of tax = $x\% \times 375 = \frac{x}{100} \times 375 =3.75x$

So, Amount including tax = 375+3.75x

We are given that Bethany paid $408.75 for a pair of diamond stud earrings.

So, 375+3.75x=408.75

3.75x=408.75-375

$x=\frac{408.75-375}{3.75}$

x=9

Hence She paid 9% of sales tax

5 0

3 years ago

What is the result of converting 81 inches to feet remember there are 12 inches in a foot?

AlekseyPX

81 inches converted to feet is 6.75 feet

7 0

3 years ago

Read 2 more answers

Solve similar triangles (advanced)

andrew11 [14]

Answer:

Step-by-step explanation:

There are 2 similar triangles.

EDA and CBA

From that we can get the following proportion.

ED / CB = AD / AB

Filling in the letters we get

6/x = (4 + 3)/3 Combine

6/x = 7/3 Cross Multiply

7x =6*3

7x = 18 Divide by 7

x = 2.57

5 0

2 years ago