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3 years ago

Help please I have 25 min left! I’ll name you brainliest!!

Mathematics

1 answer:

photoshop1234 [79]3 years ago

5 0

Answer:

A. x = -2

Step-by-step explanation:

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4c^2-8c-1=0 complete the square round to nearest hundredth

olga55 [171]

Move constant to other side
add 1
4c^2-8c=1
divide by 4 to make leading coeficient 1
c^2-2c=1/4
take 1/2 of linear coeficient and square it
-2/2=-1, (-1)^2=1
add that to both sides
c^2-2c+1=1/4+1
factor perfect squaer and add
(c-1)^2=5/4
square root both sides
c-1=+/-(√5)/2
add 1
c=1+/-(√5)/2

c=2.12 or -0.12

8 0

4 years ago

A function hall charges $250 fee to rent the hall plus $15 per guest.vwrite an equation for this function

m_a_m_a [10]

Answer:

y=15x+250 (x is the number of guests)

Step-by-step explanation:

the 15 is the slope, so that is the number that has to be multiplied by. The 250 is an additional fee that doesn't change, so it's just added on.

7 0

3 years ago

Read 2 more answers

Kareen ran 4.16 x 10^3 miles long

Savatey [412]

Which means she ran 4160 miles long
if this isn't the answer you wanted, please be more precise

6 0

3 years ago

Read 2 more answers

be rectangular prism and rectangular pyramid have the same volume. determine the value of x, the height of the pyramid.

Marina CMI [18]

ANSWER

$x= 9 \: in$

EXPLANATION

The volume of a rectangular prism is given by the formula,

$V = l \times b \times h$
We substitute the dimensions to obtain,

$V = 6 \times 3 \times 12 \: {in}^{3}$

The volume of the rectangular pyramid is,

$V = \frac{1}{3} \times 6 \times 12 \times x \: {in}^{3}$

Equating the two volumes gives,

$\frac{1}{3} \times 6 \times 12 \times x = 6 \times 3 \times 12$

We divide through by 6×12 to get,

$\frac{x}{3}=3$

We solve for x to obtain,

$x = 3 \times 3$

$x = 9 \: in$

7 0

3 years ago

PLEASE HELP!! HURRY!! THIS IS WAYY PAST DUE!! DON'T ANSWER FOR POINTS!! I NEED HELP!!!

kolbaska11 [484]

Answer:

Based on your line, what is the likely test score of a student who does not study for the test? 45

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3 years ago