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tiny-mole [99]
3 years ago
7

Only solve number 21

Mathematics
1 answer:
pantera1 [17]3 years ago
4 0

5-7+15-(-1) -2+15+1  -2+15 =13  13+1  Answer is 14    

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What is the value of 3x squared when x = 2?
KonstantinChe [14]

Answer:

Step-by-step explanation:

(3x)^{2}=(3(2))^{2} =36

(OR)

3(x^{2})=3(4)=12

Its depend on your sentence structure, what u r asking!!

7 0
3 years ago
Read 2 more answers
a computer and printer cost a total of $1236. the cost of the computer is three times the cost of the printer. find the cost of
Goshia [24]

Printer  $309   Computer $927

p+3p=1,236

4p=1,236

p=309

309x3=927

309+927=1,236

8 0
2 years ago
I need all help possible.
Leviafan [203]
So there are 52 horses
12 of them are white
how many are black?
52 - 12 = 40
there are 40 black horses
12 white horses to 40 black horses
12:40 
12/40

Hope this helps :)
5 0
2 years ago
2 numbers are such that if 7 is added to the first number, a number twice the second number is obtained. If 20 is added to the s
Eduardwww [97]

Answer:

1st= 47/7 or 6.71

2nd= 48/7 or 6.857

Step-by-step explanation:

1st number =X and 2nd number = Y

According to question, X+7=2Y

20+Y=4X

X=2Y-7 (from 1st condition)

putting in it second

20+Y=4(2Y-7)

20+Y=8Y-28

20+28=8Y-Y

48=7Y

Y=48/7

so X=2(48/7)-7

=96-49/7

47/7

5 0
3 years ago
4x + y = 10<br> can someone please help me
Crazy boy [7]

Answer:

If they are asking about the y intercept then rearrange this as y=mx+c

so y=-4x+10

here 4 is the gradient and 10 is the y intercept

Step-by-step explanation:

7 0
2 years ago
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