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amid [387]
3 years ago
9

Please help and thank you!!

Mathematics
1 answer:
ASHA 777 [7]3 years ago
7 0
Just isolate x. First you add 16 to both sides, that makes the equation 21=3x. Then divide by 3 and x=7
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Dione has 3 rolls of pennies containing 50 coins each, 4 rolls of nickels
ankoles [38]

Answer:

$94.50

Step-by-step explanation:

3(50)=150 $1.50

4(40)=160 160(5)=800 $8.00

5(50)=250 250(10)=2500 $25.00

6(40)=240 240(25)=6000  $60.00

60+25+8+1.5=$94.50

3 0
3 years ago
The sum of two numbers is -20. The difference of the two numbers is -48. What are the two numbers?
Lostsunrise [7]
34 and -14 as proven here:

Sum: 34 + -14 = 20
Difference: 34 - -14 = 48

just the opposite (when it says negative it gonna be positive)
3 0
3 years ago
Find the y-intercept of the parabola y = x2 + 6x.<br><br> Can somebody help?
WINSTONCH [101]

Given:

The equation of the parabola is:

y=x^2+6x

To find:

The y-intercept of the parabola.

Solution:

We have,

y=x^2+6x

Putting x=0 in the given equation, we get

y=(0)^2+6(0)

y=0+0

y=0

Therefore, the y-intercept of the parabola is 0. It means the y-intercept of the given parabola is at point (0,0).

6 0
3 years ago
Fihd the area of the triangle.<br> 6<br> 8<br> square units
damaskus [11]

Answer:

area of triangle is

\frac{1}{2} * b*h\\\\\frac{1}{2} *6*8\\\\6*4=24

7 0
3 years ago
A two-digit locker combination is made up of non-zero digits and no digit is repeated in any combination.
kondor19780726 [428]

Answer:

it's C) 1/18

hope this helps

5 0
3 years ago
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