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Anarel [89]
3 years ago
7

Iready algebra expressions with exponents evaluate the expression 2b’3+5 when b = 3 help

Mathematics
1 answer:
Mashutka [201]3 years ago
7 0

Answer:

when you substitude 3 for b in (2b^3)+5 this should equal 23

Step-by-step explanation:

(2b^3) +5

(2(3)^3) +5

(2(9)) +5

(18) +5

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Evaluate the expression <br> 5.4+ab, if a = 4 and b = 8
dsp73

Answer:

37.4

Step-by-step explanation:

a = 4 and b = 8

change the equation

5.4 + (4) (8)

use P.E.M.D.A.S. and multiply

4*8 = 32

add

5.4 + 32 = 37.4

7 0
3 years ago
Please help: Triangle ABC is similar to triangle PQR where
andre [41]
Explanation:




AB=7
AC=9
You are looking for R


7+9=16


So R is 16
6 0
3 years ago
-5 5/6 + (-8 4/5)= what show the work
djverab [1.8K]

Answer:

-13 2/3

Step-by-step explanation:

-5 5/6               5x6= 30 4x5= 20

+                                20/30= 2/3

-8 4/5

-----------      -5 + -8 = -13

-13  2/3

hope this helps

6 0
3 years ago
Sovle the system of linear equations by graphing y=2x-1 y=x+1
lorasvet [3.4K]

Answer:

2x-1=x+1

2x-x=x

1+1=2

x=2

Knowing x's value, we substitute it with the equations

y=x+1

y=2+1

or y=2x-1

y=2(2)-1

y=4-1

y=3

(2,3) are your coordinates :D

5 0
3 years ago
Martin can run 1 mile in 7 minutes. What valid proportions can be written from this information? Check all that apply. StartFrac
Tpy6a [65]

Answer:

<u>1/7=3/21</u>

<u>7/1=21/3</u>

the other fractions are not correct/valid therefore the fractions above are the correct answers

Step-by-step explanation:

Let me know if you need any other help:)

3 0
3 years ago
Read 2 more answers
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