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ankoles [38]
2 years ago
7

15 points! Thank you

Mathematics
2 answers:
Pepsi [2]2 years ago
5 0

10x^2+27x-28=10x^2+35x-8x-28=5x(2x+7)-4(2x+7)\\\\=(2x+7)(5x-4)\\\\Answer:\ D.\ 2x+7

Luda [366]2 years ago
4 0
Hey there!

Factorization of the trimonial.

10x^2+27x-28

=>10x^2+35x-8x-28

now factorization is

(2x+7)(5x-4)

So the correct answer is D.(2x+7)

Hope it helps you.
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Find the value of x........
raketka [301]

Answer:

x=23

Step-by-step explanation:

Hello There!

Remember the exterior angle of a triangle is equal to the opposite interior angles of a triangle

so

137-x=2x+3x-1

now we can solve for x

step 1 combine like terms

2x+3x=5x

now we have

137-x=5x-1

step 2 add 1 to each side

-1+1 cancels out

137+1=138

138-x=5x

step 2 add x to each side

-x+x cancels out

5x+x=6x

now we have

138=6x

step 3 divide each side by 6

6x/6=x

138/6=23

we´re left with x=23

7 0
2 years ago
What is 7.849+0.09? can you help me find the answer?
zmey [24]

Answer:7.939

Step-by-step explanation:

5 0
3 years ago
Suppose that a bored student wants to go to a restaurant for lunch, but she only has an hour in which to go, eat, and get back i
Blababa [14]

Missing information

Take local speed ad 30 mph and express your answer in miles

Answer:

7.5 miles

Step-by-step explanation:

Time for lunch is 1 hour but once will wait for 30 minutes before served and eat.

Out of 1 hour, 30 mins is for service and eating to mean time to get from work to restaurant, to and fro is the other 30 mins

Since 30 mins is for to and fro, then one way direction takes 15 mins.

Speed, s=d/t and distance d=speed*time

Given local speed of 30 mph and time as 15 mins,

To convert minutes to hours, we divide it by 60 hence the distance is

30*15/60=7.5 miles

Therefore, the student can go to a restaurant that is 7.5 miles from the office.

4 0
3 years ago
Amia has $300 to plan a trip with her cousins. She wants to go to Orlando, Florida and it costs $127 for a room, $75 for gas rou
zhuklara [117]
First let's add the room cost and the gas.

127+75= 202

Let's subtract that from 300.

300-202= 98

Divide 98 by 20.

20 can only go into 98 4 times. 

Amia can only bring 3 cousins, since one of those 4 tickets are for her. 

I hope this helped you.

Brainliest answer is always appreciated. 
4 0
3 years ago
Answer each part below using only mental math, and describe your method. a. If 39 is 1% of a number, what is that number? How di
Leni [432]

Answer:

Step-by-step explanation:

Given:  39 = 0.01n

Move the decimal point on each side two places to the right:  3900 = n

8 0
3 years ago
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