Mathematics College

4. Find CD and X . (3 points) x ^ 3 + 20 30 D x ^ 8 + 22x - 120 will mark brainliest

4. Find CD And X . (3 Points) X ^ 3 + 20 30 D X ^ 8 + 22x - 120 Will Mark Brainliest

Answers

Answer 1

Answer:

CD = 15

x = 5

Step-by-step explanation:

Since BF ≅ FD and AE ≅ EC, then [tex]EF = \frac{AB + CD}{2}[/tex]

So, [tex]30 = \frac{x^{2} +20 + x^{2} + 22x - 120}{2}[/tex]

[tex]60 = 2x^{2} + 22x - 100[/tex]

[tex]2x^{2} + 22x - 160 = 0[/tex]

[tex]2(x^{2} + 11x - 80) = 0[/tex]

2(x - 5)(x + 16) = 0

x = 5  or x = -16

If x = 5, then CD = [tex]5^{2} +22(5) - 120 = 25 + 110 - 120 = 15[/tex]  

Ix x = -16, then CD = will be a negative number which it cannot be.

Related Questions

What is -4(5 + (-2))

Answers

Answer:

-12

Step-by-step explanation:

5 + -2 = 3

-4 x 3 = -12

Answer:-12

Step-by-step explanation:

Stephano has a coupon for 20% off an item that normally costs $30. If he uses the coupon, how much will he pay?

Answers

Answer:

$24

Step-by-step explanation:

The coupon is 20% off so he will pay 80% of the item so,

30*.8=24

or

30*.2=6 <--- $6 is how much the coupon will take off

30-6=24

Answer:

He'll pay $24.00

One-step multiplication & division equations: fractions & decimals
Solve the equation
= 4.5

Answers

Answer:

[tex]i[/tex] = 13.5

Step-by-step explanation:

Explanation:-

Given that the equation

          [tex]\frac{i}{3} = 4.5[/tex]

cross multiplication, we get

         [tex]i[/tex] = 4.5 × 3

       [tex]i[/tex] = 13.5

a package has one face, no edges, and one vertex. what is the object?

Answers

Answer:

a cone

Step-by-step explanation:

Answer:

cone

Step-by-step explanation:

Can I please get help

Answers

Answer:

F for number 14

Step-by-step explanation:

What is the first step in solving 11x+1=67

Answers

Answer:

The second one

Subtract 1 from both sides

Answer:

subtract 1 to both sides

Step-by-step explanation:

11x+1=67

    -1   -1

11x=66

/11   /11

x=6

How much money needa to be deposited now into an account to obtain 9,000 in 7 years if the interest rate is 8% per year compounded continuously?

Answers

Answer:

P: the principal, the amount invested

A: the new balance

t: the time

r: the rate, (in decimal form)

Step-by-step explanation:

Ex1: If $1000 is invested now with simple interest of 8% per year. Find the new amount after two years.

P = $1000, t = 2 years, r = 0.08.

A = 1000(1+0.08(2)) = 1000(1.16) = 1160

4
The factorization of 12x + 15 is Help please

Answers

Answer:

3

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#

A bus traveling from Memphis to Nashville has an average speed of 53 mph. How long will the trip take in hours if the distance between the two cities is 220 miles? ( HOW DID YOU GET YOUR ANSWER PLEASE SHOW YOUR WORK, DO NOT BOTHER ANSWERING IF YOU DO NOT SHOW WORK AND TELL ME HOW YOU GOT YOUR ANSWER!!)
A. 48.14
B. 22.36
C. 192
D. 4.15
E. .50
F. 0
G. .251
H. 1.25
I. -135

Answers

Answer:

the answer is 4.15.

Step-by-step explanation:

this is super easy my ffriend. think about it. 53 miles per hour. how many miles do u go in an hour... 53 MILES PER HOUR. so you now know you go 53 miles every hour. so what you then do is see that it is 220 miles to ur destination. in an hour you go 53 miles so you take 220 DIVIDED BY 53 and you get ur answer.

Can someone help im not good with ratios.

Answers

Answer:

4:1

Step-by-step explanation:

60/15 simplified 4/1

Lisa and Marie are both on the track team. During practice, Lisa ran 10 laps around
the track in 18 minutes. Marie ran 8 laps around the track in 14 minutes. Who ran at a
faster rate? If each runner continues at her same pace, how long would it take each
one to run 15 laps?

Answers

Answer:

Marie ran at a faster rate. It takes 27 minutes for Lisa to run 15 laps while it takes Marie 26.25 minutes to run 15 laps.

Step-by-step explanation:

18 ÷ 10 = 1.8 (Lisa's rate)

14 ÷ 8 = 1.75 (Marie's rate)

1.8 x 15 = 27 minutes (How long it takes for Lisa to run 15 laps)

1.75 x 15 = 26.25 (How long it takes for Marie to run 15 laps)

A pair of basketball shoes was originally priced at $80, but was marked up 37.5%.
What is the new price of the shoes after the mark up?

Answers

Answer:

110

Explanation:

First move the decimal point over to the left twice.

.375

Then multiply 80 by .375 like this :

.375 x 80 = 30

Lastly, add 30 to 80 and put the dollar sign.

$110

5/6 divided by 1/2=
Please help me!!

Answers

It’s 5/3 smanqnwnnwen wbwnwnw

Right right triangle has an angle that measures 54° which could be the measure of another angle in the triangle

Answers

Answer: 36 degrees

Step-by-step explanation:

A triangle angle sum is 180.

So 90 + 54 = 144

180-144 =36

Carlos brought 16 packs of cola to a party, and each pack had 8 cans. Heather brought 9 cans of juice. How many cans did they bring in all?

Answers

Well, If there is 16 packs and 8 in each pack then you multiply 16 and 8 which is 128, then add the extra 9 cans of juice and the answer is 137. Have a good rest of your day/night!!

number of
teaspoons
number of
tablespoons
number of
cups
2
36
12
48
3
3

Answers

Answer: 2 each

Step-by-step explanation:

estimate the product by rounding each number to its greatest place value of 2342.7 times 784.3​

Answers

Answer:

The answer is 1,837,379.61 but if you round, it's 2,000,000,.00.Hope this helps!

What is the median for the set of data?
6, 7, 10,12,12,13

Answers

Sorry but I need more information

I Need Help With This Question

Answers

a because your not dividing it by 5 your subtracting 5 from k divided by 2

Answer:

B

Step-by-step explanation:

product means multiplication, but there isn't any multiplication happening

Raul crosses Main Street when he walks home from school. The graph of the function d(t)=4|t-0.75) shows Raul's distance, in miles, from Main Street after thours. The domain of the function is 0 <= x <= 1.5 The graph shows his entire trip

Answers

Answer: does someone have it cause I’m stuck to

Step-by-step explanation:

Calculate the mean: $1,001, $68.50, $33.82, $581.95. (Round your answer to the nearest hundredth.)

Answers

Answer:

Step-by-step explanation:

(1001+68.5+33.82+581.95)÷4=400(nearest to hundred)

Which equation represents the height of the purple part of the wall?
о В.
A. 2 x 8 7 2 = 6 3 ft
B. 9x8* = 6 ft
ocx 10 = 6 ft
D. x 104 = 7ft

Answers

Answer:

ax + by = c

Step-by-step explanation:

what times 4/5 equals 3/10

Answers

Answer:

3/8

Step-by-step explanation:

make equation

x*4/5=3/10

simplify

4/5x=3/10

multiply both sides by 5/4

your answer is 3/8

If Oscar can make 5 doughnuts every 2 minutes, exactly how many minutes
would it take him to make 36 doughnuts?

Answers

The answer is 14.4 minutes

QUESTION 1: Is the following equation proportional? How do you know? y=3x-4


QUESTION 2: Is the following equation proportional? how do you know? y=7x

Answers

Answer:

1: Yes because it is in the form y=mx+b

2: Yes because it is in the form y=kx

Step-by-step explanation:

I do this kind of stuff for math

Long division 5th grade I’m sorry if I’m asking a lot but I’m really new to this

Answers

Answer:

95.2

Step-by-step explanation:

Answer:

95.2

Step-by-step explanation:

476÷5=95.2

[tex]\sqrt[5]{476} }[/tex]

9x5=45

47-45=2

bring down the 6

26

5x5=25

26-25=1

Since the one is excess the answer is 95 and 1/5

but 1 divided by 5 equals .2

so the answer would b 95.2

PLEASE HELP ITS URGENT I HAVE 3 MINS AND IM FAILING I REALLY NEED A A ASAP PLEASE HELP

Answers

Answer:

I am pretty sure it is B I am not sure but this is what I think

Step-by-step explanation:

Which of the following is a polynomial?
A.
(x - 2)
(x++3)
B. +2
х

c. x2-1
D. x + x4 + 16

Answers

Answer:

x++3 is even equal sides

Step-by-step explanation:

A certain animal gets food from another animal without killing it. Identify the type of organism.
(A) Saprophyte
(B) Carnivore
(C) Parasite
(D) Autotroph

Answers

Answer:

The correct answer is C. Parasite.

Step-by-step explanation:

Parasitism describes the phenomenon within the animal and plant world that an organism or virus (parasite) misuses a usually considerably larger organism of a different species as a host. The host serves the parasite for food supply (mostly in the form of blood or other body secretions) and in some cases also as a long-term habitat. The host's health is damaged by the parasite, but usually remains alive. The consequences of parasitic infestation range from sting or bite injuries from massive physical complaints to serious infectious diseases and even death in extreme cases. The best known and most widespread human parasites are human lice, mosquitoes and various types of ticks and worms.

(-5x) ×(-6) please it is urgent​

Answers

Answer:

30x

Step-by-step explanation:

Answer:

30x

Step-by-step explanation:

a negative multiplied by a negative is positive.

-5x x -6 =30x

Hope I helped!

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