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Anton [14]
3 years ago
11

Solve using the quadratic formula x^2+4x-40=-8

Mathematics
1 answer:
Anarel [89]3 years ago
6 0
Start by moving the 8 over to the other side:
x^2+4x-32=0

Then you can do a factor tree for -32 (what two numbers add to 4 and multiply to -32):
You should get 8 & -4 as your two numbers

Then plug it in to the equation:
(x+8)(x-4)=0

Set them both equal to zero:
x+8=0 x-4=0
x=-8 x=4
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sergiy2304 [10]

Expplanation and Answer:

y=mx−7

Swap sides so that all variable terms are on the left hand side.

mx−7=y

Add 7 to both sides.

mx=y+7

Divide both sides by m.

m

mx

​

=

m

y+7

​

Dividing by m undoes the multiplication by m.

x=

m

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​

3 0
3 years ago
10 mL = ____________ L ( 1L = 1000 ml
DENIUS [597]

Solution:

<u>Note that:</u>

  • 1 L = 1000 ml

<u>Using the clue above, let's solve each problem.</u>

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  • 4 L            =       4 x 1,000 mL        =       4,000 mL
  • 230 mL    =        230/1,000 L         =           0.23 L
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Hoped this helped!

4 0
3 years ago
Makaylas Movie theater,, 10 points please answer lol
miskamm [114]

Answer:

You're right! The 1st part is 25, and the second part is all real numbers

Step-by-step explanation:

She has to pay $25 to begin with. For the 2nd part, it's not going to be any crazy values, since we're dealing with money

8 0
3 years ago
4 people are on the team. Members will be chosen randomly to serve as chairperson, treasurer, secretary, or timekeeper . Noor is
aliina [53]

Answer:

Step-by-step explanation:

Given that  four people are on the team. Members will be chosen randomly to serve as chairperson, treasurer, secretary, or timekeeper

Since one person cannot serve two posts we have total number of ways

= 4(3)(2)(1) = 24

If Noor is chair person and Qu treasurer then remaining 2 can take two posts in 2 different ways

So probability that Noor is selected to be chairperson and Qu is selected to be treasurer

=favourable outcomes/total outcomes

= \frac{2}{24} \\=0.083

8 0
4 years ago
VERY EASY, WILL GIVE 50 POINTS FOR CORRECT ANSWER ASAP AND WILL GIVE BRAINLIEST.
jonny [76]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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