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ohaa [14]
3 years ago
10

Which are the roots of the quadratic function f(b)=b^2-75? Check all that apply.

Mathematics
1 answer:
barxatty [35]3 years ago
5 0
A and B ............................
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Reuben​ says, "two days ago i was 20 years old. later next​ year, i will be 23 years​ old." how is this​ possible?
Aneli [31]
Let us always base on the present age. We denote this by x. Now, the age he had 2 years ago would then be denoted as (x-2). Let's equate this to 20 years old.

x - 2 = 20
x = 20 + 2
x = 22 years old
He should be 22 years old now.

Let's check the other condition. After 1 year, his age should be (x+1). Let's equate this to 23 years old.

x + 1 = 23
x = 23 - 1
x = 22


Thus, this is possible if Reuben is 22 years old as of the present.
7 0
3 years ago
PLEASE HELP ASAP THANKS!
Vladimir [108]

Answer:

answer is 8$ have a great day

Step-by-step explanation: BRAINLIEST PLEASE

6 0
3 years ago
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Df+gh=k<br> solve for h.<br> please help!!
fiasKO [112]

Answer:

15

Step-by-step explanation:

6 0
3 years ago
To wash a window that is 8 meters off the ground, Stanley leans a latter against the side of the building The base of the latter
diamong [38]

Answer:

the latter is ten meters long

Step-by-step explanation:

its just ten meters long

3 0
3 years ago
Mrs. Grubb bought some shirts for $4 each and some hats for $12 each. She bought 9 pieces of clothing for $100. Write a system o
Lana71 [14]

Answer:

Mrs. grub bought total number of shirts = 1

Mrs. grub bought total number of hats = 8

Step-by-step explanation:

Let Mrs. grub bought total number of shirts = x

Let Mrs. grub bought total number of hats = y

As given,

Price of 1 shirt = $4

Price of 1 hat = $12

⇒ Price of x shirts = $ 4x

   Price of y hats = $ 12y

Given that,

Mrs. Grubb bought total piece of clothes = 9

⇒ x + y = 9     .......(1)

Also given,

She bought all clothing for $100

⇒ 4x + 12 y = 100       ........(2)

Divide equation (2) by 4 we get

x + 3y = 25     .......(3)

Now,

Subtract equation (1) from equation (3) , we get

x + 3y  - ( x + y ) = 25 - 9

⇒ x + 3y - x - y = 16

⇒2y = 16

⇒y = \frac{16}{2} = 8

⇒ y = 8

Put value of y in equation (3), we get

x + 3(8) = 25

⇒x + 24 = 25

⇒x = 25 - 24 = 1

⇒x = 1

∴ we get

Mrs. grub bought total number of shirts = x = 1

Mrs. grub bought total number of hats = y = 8

8 0
3 years ago
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