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lakkis [162]
3 years ago
9

Evaluate the expression. 6*13 - 4 (to the second power)

Mathematics
1 answer:
mariarad [96]3 years ago
7 0

Answer:

62

Step-by-step explanation:

6*13-4^2

6*13-16

78-16

62

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What is the value of the expression 4(x - y) + 2 when x = 7 and y = 1?
Ksju [112]

Answer:

26

Step-by-step explanation:

4(7-1) +2

4(6) + 2

24+ 2

26

7 0
3 years ago
Read 2 more answers
Diego’s family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remain
Radda [10]

Answer:

14 gallons = 23 days

Step-by-step explanation:

14/6

6 0
3 years ago
Find the x-intercepts of the parabola with vertex (-5,80) and y-intercept (0,-45). Write your answer in this form (x of 1 , y of
Ivan
A parabola is a quadratic function, and a quadratic can be expressed in vertex form, which is:

y=a(x-h)^2+k, where (h,k) is the vertex (absolute maximum or minimum point of the quadratic)

In this case we are given that (h,k) is (-5,80) so we have so far:

y=a(x--5)^2+80

y=a(x+5)^2+80, we are also told that it passes through the point (0,-45) so:

-45=a(0+5)^2+80

-45=25a+80  subtract 80 from both sides

-125=25a  divide both sides by 25

-5=a, so now we know the complete vertex form is:

y=-5(x+5)^2+80

The x-intercepts occur when y=0 so:

0=-5(x+5)^2+80  add 5(x+5)^2 to both sides

5(x+5)^2=80  divide both sides by 5

(x+5)^2=16  take the square root of both sides

x+5=±√16  which is

x+5=±4  subtract 5 from both sides

x=-5±4 so the x-intercepts are:

x=-1 and -9


7 0
3 years ago
What is (9 x2/3) x2/3
lutik1710 [3]

Answer:

4

Step-by-step explanation:

First you have to follow pemdas, which says you have to follow this order:

Parentheses first, exponents second, multiply, divide, add, and then subtract. Always follow from left to right. First solve inside the parentheses.

9x2/3=6 and then multiply the product by 2/3 {6x2/3=4}

4 0
2 years ago
I need help with this !!
Leona [35]
Mean: 14.5
median:15.5
IQR: 7.5
5 0
3 years ago
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