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3 years ago

What two numbers have a sum of 217 and a difference of 85?

1 answer:

3 0

We can use the system of equations:x + y = 217x - y = 85-----------------From the 2nd equation: y = x - 85x + x - 85 = 2172 x = 217 + 852 x = 302x = 302 : 2x = 151y = 217 - 151y = 66We can prove this solution:151 + 66 = 2017 and 151 - 66 = 85.Answer: those numbers are 151 and 66.

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Which equations show the zero property of multiplication? Choose exactly two answers that are correct. A. –4.7 • 0 = 0 B. –8 + 8

tester [92]

The zero property is anything multiplied zero to equal zero

Answers: A and D

-4.7x0=0
0x3=0

6 0

3 years ago

Could anyone help me out, it’s would mean a lot.

SIZIF [17.4K]

Answer:

$x = 19$

Step-by-step explanation:

If two lines are perpendicular, they create 4 90° angles. Meaning, in this case, that m<DBC = 90 and m<DBA = 90.

We're given that m<DBE = 2x - 1 and that m<CBE = 5x - 42.

The sum of angles DBE and CBE = m<DBC = 90°

We can add the two angles and set it equal to 90 to find x

$2x - 1 + 5x - 42 = 90\\7x - 43 = 90\\7x = 133\\x = \frac{133}{7} =19$

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3 years ago

Please help meh!!!!!!!!!!!!!!!! !

tigry1 [53]

Answer:

70/100

0.7

70%

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

-2x + 7 = x-32 i need all the steps

ycow [4]

Answer:

-2x + 7 = x-32

7+32=x+2x

39=3x

x=39/3

x=13

Step-by-step explanation:

5 0

2 years ago

Jason has 208 baseball cards. This is 52 less than the number of cards that Robert has.

V125BC [204]

Answer:

B) R - 52 = 208

Step-by-step explanation:

Robert has 52 more cards than Jason, who has 208, so Robert has 208 + 52 cards. This can be turned into:

R = 208 + 52

then subtract 52 from both sides:

R - 52 = 208 + 52 - 52

R - 52 = 208

and that's the answer

4 0

3 years ago