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Kisachek [45]
3 years ago
12

What is the value of 6x²+4x+8 when x =7

Mathematics
1 answer:
Ann [662]3 years ago
8 0

Answer:

330

Step-by-step explanation:

6x²+4x+8

Let x=7

6 ( 7)^2 + 4(7) +8

6*49+ 28+8

294+28+8

330

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How does a tree have self similarity?
ankoles [38]
Well trees are living things like humans they are very helpful like people they have arms like people and the leaves are kinda like hair
4 0
3 years ago
A positive number is<br> A negative number is
marysya [2.9K]

Answer:

A positive number is the opposite of a negative number witch is negative

ex: 1,2,3,4,5,6,7,8,9

A negative number is the opposite of a positive number

ex: -1,-2,-3,-4,-5,-6,-7,-8,-9

6 0
3 years ago
A local hamburger shop sold a combined total of 763 hamburgers and cheeseburgers on Saturday. There were 63 more cheeseburgers s
Airida [17]
In order to solve this we'll start by assigning variables to hamburgers and cheeseburgers, since these are what we're trying to find. Lets say x = hamburgers and y = cheeseburgers. So we know two things, we know that x+y= 763 (hamburgers plus cheeseburgers sold equals 763, and we know that y= x+63 (cheeseburgers sold equals 63 more than hamburgers sold). Now we have a system of equations. This can be solved most easily by rearranging each equation to each y, and then set them equal to each other:
x+y=763 -> y=763-x, and we already have y=x+63. Set them equal to each other:
x+63 = 763-x (add x to both sides) -> 2x+63 = 763 (subtract 63 from both sides) -> 2x = 700 (divide both sides by 2) x = 350. So we solved for x, which is hamburgers sold, which is what the question asks for, so your answer is 350 hamburgers were sold on Saturday
6 0
3 years ago
What is the solution to 2x^2+8=x^2-16?
KIM [24]
X= 2i(square root of 6), -2i(square root of 6)
7 0
3 years ago
I can’t figure out what the half circle means the answer options are 163,129,149 and 186
vodka [1.7K]

Answer: 129

Step-by-step explanation: First find the area of the circle. Since we know the area of a circle is πr²  (pi multiplied by the radius squared) we can find the area of the half circle. The radius is 5 (because radius is half of the diameter)

Area=3.14(5)²

       =3.14(25)

       =78.5

But since this is just a half circle, divide this by 2

That will get 39.25

Then add this to the area of the rectangle (L*W) which is 90

That will get about 129

4 0
3 years ago
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