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BaLLatris [955]
3 years ago
15

CAN YOU GUYS HELP ME FOR #10

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
5 0
You’ve been asleep for 22 years , multiply
Tema [17]3 years ago
4 0

Answer:

31

Step-by-step explanation:

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21÷(4+3)-10 = <br><br> Please help me solve ^^
Dafna11 [192]

Answer:

-7

Step-by-step explanation:

21 ÷ (4+3) - 10

=> 21 ÷ (7) - 10

=> 3 - 10

=> -7

5 0
2 years ago
You need a 50% solution. On hand, you have a 200 mL of a 35% alcohol mixture. You also have 70% alcohol mixture. How much of the
CaHeK987 [17]

Answer:

150 mL

Step-by-step explanation:

We need a mixture that is at 50%, now we have 200 mL at 35% and another mixture that is at 70%, that is, we must calculate how much of this mixture is added, by the following equation

200 * 35% + x * 70% = 50% (x + 200)

70 + 0.7 * x = 0.5 * x + 100

0.7 * x - 0.5 * x = 100 - 70

0.2 * x = 30

x = 30 / 0.2

x = 150

150 mL must be added so that the mixture is 50%.

6 0
2 years ago
!!!!!!! HELPPPPPP !!!!!! ASAP !!!!!!!!! HELPPPPPP!!!!!!!!!!!!
ElenaW [278]

Answer:

No you wouldn't because you are not dividing or multiplying by a negative number.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Y= 5x+2 linear equation
dem82 [27]

Answer:

HI

Step-by-step explanation:

3 0
2 years ago
The difference of two numbers is 40. Their sum is 66. Find the numbers.
Margaret [11]
First of all, x>y
x-y=40
and
x+y=66
add them equations together to eliminate

x-y=40
<u>x+y=66 +</u>
2x+0y=106

2x=106
divide by 2
x=53

sub back
x-y=40
53-y=40
minus 53 both sides
-y=-13
y=13


the numbers are 53 and 13
8 0
3 years ago
Read 2 more answers
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