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stepan [7]
3 years ago
13

X+2y = 5 3х +6y = 15 Use the substitution method

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0
X=1 Y=2 the reason is 1+2*2= 5 and 3*1+6*2= 15. I explained it better in the picture. If it’s right, plz mark me as brainliest

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Which statements describe a characteristic of a right pentagonal pyramid? Select two options.
NISA [10]

Answer:

  • B and D are correct

Step-by-step explanation:

<u>The options:</u>

A. The bases are parallel and congruent.

  • Incorrect. There are no parallel bases in any pyramid

B. The segment from the top to the center of the base is perpendicular to the base.

  • Correct as its a right pyramid

C. All the faces are congruent pentagons.

  • Incorrect. Only the base is pentagon.

D. The base is a pentagon and the sides are triangles.

  • Correct

E. The base must be a regular polygon.

  • Incorrect. It is pentagon.
7 0
3 years ago
Read 2 more answers
Please help me i will give u brainlesit
AURORKA [14]

Answer:

the ordered pair represents the slope of the line and its function

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Alyssa starts with $40 and saves $10 each week. Bill has $24 and saves $12 each week. For numbers 5a. – 5c., determine whether e
adelina 88 [10]

Answer: See explanation

Step-by-step explanation:

Alyssa starts with $40 and saves $10 each week. This can be written as:

= 40 + 10x

Bill has $24 and saves $12 each week. This can be written as:

= 24 + 12x

where, x = number of weeks

a. Bill will never have more money than Alyssa.

False.

From the 9th week, Bill will have more money than Alyssa. To check goes below.

Alyssa = 40 + 10x = 40 + 10(9) = 40 + 90 =$130

Bill = 24 + 12x = 24 + 12(9) = 24 + 108 = $132

b. Bill's savings can be represented by the equation = 12 + 24 where x is the number of weeks and y is his savings.

False.

Bill savings can be represented by:

= 24 + 12x

where, x = number of weeks

c. Alyssa and Bill will have the same amount of money at Week 6.

False.

Alyssa = 40 + 10x

= 40 + 10(6)

= 40 + 60

= $100

Bill = 24 + 12x

= 24 + 12(6)

= 24 + 72

= $96

7 0
3 years ago
A TV that usually sells for $187.13 is on sale for 25% off. If sales tax on the TV is 9%, what is the price of the TV, including
Brrunno [24]
First you want to work the discount for the TV.
$187.13*0.75=$140.3475 (this will get you the price of the TV after the discount.)
Now round the answer $140.3475 to the nearest hundredth. The new answer is $140.35. So the price of the TV after the discount is $140.35. Next use this equation to solve for the tax that would be added to the price of the discounted TV:
(t*d)+d=p
In that equation t=taxes, d=discounted TV price, and p=price total. Now input the values you know.
(0.09*140.35)+140.35=p
Multiply what is in the parentheses first.
12.6315+140.35=p
Add the two numbers together.
152.9815=p
Round the end amount to the nearest hundredth.
152.98=p
So now you know that the total price of the discounted TV after tax is added is $152.98. I hope you could understand this and it helps! :D
3 0
4 years ago
Help with #9 ksksjdne
steposvetlana [31]

Answer:

29

Step-by-step explanation:

7x + 1 + 4x - 3 = 42

11x - 2 = 42

11x = 44

x = 4

Substitute the value of X into the value for DE.

7(4) + 1 = 29

6 0
3 years ago
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