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love history [14]
3 years ago
8

Help with this math question please

Mathematics
2 answers:
Soloha48 [4]3 years ago
8 0
The answer will be 23

Because -13-(-10) you have to make the minus sign into Addtion because you already have a negative which then means you have to make the 10 into a positive
Leni [432]3 years ago
3 0
So when you have a -(-) then you make that a positive so that would mean - (+) so the two - - are positive and just one - is still negative, which would mean that the answer is -3. Because if the negative is greater that the positive then it is still a negative, in your mind you should make 13 positive minus 10 and then add the negative to make things easier if you want to.
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Add 5 to me.Then divide by 7.If you add 12 and the subtract 7,you get 10
qaws [65]

Answer: 30

Step-by-step explanation:

Let the number be y

Add 5 to me

Y+5............equ1

Divide by 7

Y+5/7

Add 12

Y+5/7+12

Subtract 7

(Y+5)/7+(12-7)=10

12-7=5

Substitute

(Y+5)/7+5=10

Find the lowest common multiple

((Y+5)+7(5))/7=10

(Y+5)+35)/7=10

Cross multiply

Y+5+35=70

Y+40=70

Y=70-40

Y=30

The unknown number is 30

6 0
3 years ago
10. <br>V=720 cm<br>L=?<br>P=15 cm<br>T=8 cm<br>A. 6 cm<br>B. 8 cm<br>C.10 cm<br>D. 12 cm​
grin007 [14]

Answer:

6 cm

Step-by-step explanation:

Given the information :

V=720 cm

L=?

P=15 cm

T=8 cm

The volume = L * P * T

V = L * P * T

720 = L * 15 * 8

720 = L * 120

L = 720 / 120

L = 6 cm

5 0
3 years ago
¿Cuántas onzas equivalen a 9 libras? (1 libra = 16 onzas)
rosijanka [135]

Answer:

144 onzas

Step-by-step explanation:

1) 1 libra= 16 onzas

2) 16x 9= 144

;) Espero que eso te ayude

4 0
3 years ago
ALGEBRA Find mZA in ABC if mZB = 38º and mZC = 38º.
ValentinkaMS [17]

Answer:

d

Step-by-step explanation:

dddddddddddddddddddddddddddd

6 0
3 years ago
A washer and a dryer cost $770 combined. The washer costs $70 more than the dryer. What is the cost of the dryer?
vazorg [7]
Let w = washer and d = dryer:

w + d = $770,
but w = d + 70, replace w with d+70
(d+70) + d = 770
2d + 70 =770
2d = 770 -70 = 700
and d=$350, then w=350+70 = 420
8 0
3 years ago
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