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aleksley [76]
4 years ago
7

Could someone help using 8th grade exponents/real numbers?

Mathematics
1 answer:
77julia77 [94]4 years ago
6 0
$3*5=$15 (price of lunch)
15+5=20 (ticket cost)
20+2=22 (amount loaned to friend)
22+3=25 (amount left over)
he started with $25
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Solve for f. h = f² + 2g
SIZIF [17.4K]
F^2=h-2g
f=√h-2g
hope it helps
3 0
3 years ago
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What is the length of the diagonal?
Anon25 [30]
The answer is 16\sqrt{8} i hope this answer helps you!
4 0
4 years ago
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Work out the value of x in the following. (See photo)
AfilCa [17]
A) 2^(x+3)= 4^(2x)
make base number the same
2^(x+3)= 2^2 (2x)
set the exponents equal to eachother
x+3=2 (2x)
x+3=4x
-x both sides
3=3x
÷3 both sides
x=1

b) 16^(1/5)×2^(x)=8^(3/4)
make base same number
2^4 (1/5)×2^(x)=2^3 (3/4)
2^(4/5)×2^(x)=2^(9/4)
set exponents
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5 0
4 years ago
55. f(x) = x + 2; (1, -3)
Tems11 [23]

Answer:

F(x) = 3

Step-by-step explanation:

Just substitute x with 1 and you add it with 2 and your answer is three

3 0
3 years ago
Tabitha wants to hang a painting in a gallery. The painting and frame must have an area of 58 square feet. The painting is 7 fee
lianna [129]
The quadratic equation would be;
x2+15x-2=0

Working:
Assuming the area around the painting i.e the frame, has a uniform thickness, then;
Length of painting and frame = 8+x
Breadth of painting and frame= 7+x

The area from above step gives;
 A= LxW
A= (8+x)(7+x)
On expanding, 56+8x+7x+x2
On simplifying,
56+15x+x2. This should be equal to 58.
58=x2+15x+56
Taking 58 to the other side,
x2+15x-2=0

7 0
4 years ago
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