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kifflom [539]
3 years ago
8

Please help me solve this! 20 points.

Mathematics
2 answers:
inn [45]3 years ago
7 0

Answer:

Part A:5x+3(x-5)=6x+2x-15

5x+3x-15=8x-15

+15 +15

5x+3x=8x

8x=8x

SO there’s an infinite amount of solutions.

Part b: i used the distributive property

zhannawk [14.2K]3 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

Given

5x + 3(x - 5) = 6x + 2x - 15

Use the distributive property to expand the parenthesis

5x + 3x - 15 = 8x - 15 ← collect like terms on the left side

8x - 15 = 8x - 15

Both sides are equal, hence the equation has an infinite number of solutions.

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Question 6 of 15
umka2103 [35]

Answer:

LE=5\ units

Step-by-step explanation:

we know that

In a rectangle, the two diagonals are congruent and each diagonal bisects the other

so

LN=2KE ----> equation A

KE=LE -----> equation B

step 1

Find the value of x

solve equation A

LN=2KE

substitute the given values

(2x+2)=2(3x-7)

solve for x

2x+2=6x-14\\6x-2x=2+14\\4x=16\\x=4

step 2

Find the value of KE

KE=3x-7

substitute the value of x

KE=3(4)-7=5\ units

Remember that

KE=LE  -----> by each diagonal bisects the other

therefore

LE=5\ units

8 0
3 years ago
Maria’s suitcase has a mass of 14 kilograms. Her sister’s suitcase
nadya68 [22]

Answer:

Maria

Step-by-step explanation:

Marias suitcase is heavier as 1600 grams to kg is 1.6kg which is less than Marias suitcase which weighs 14kg hope this helps:)

7 0
2 years ago
Factor 1
Aneli [31]

Answer:

See explanation and attachment.

Step-by-step explanation:

One of the ways to represent polynomial is the use of algebraic tiles.

To represent the polynomial x²-5x-1, we would use algebraic tiles to represent each of the three terms.

Algebra tiles come with different colors and sizes. Each size is equivalent to a degree of different monomials.

The x² tile is a monomial with degree of 2, the x tile is a monomial with degree of 1 and the unit tile (constant) is a monomial with degree of 0.

Let the shaded tiles represent the positive tiles and the unshaded tile represent the negative tiles.

Find attached the diagram for the tiles.

To represent the polynomial x² - 5x - 1, we would need 1 shaded x² tile, 5 unshaded x tiles and 1 unshaded unit tile. Then we would arrange the tiles to correspond with the polynomial.

3 0
3 years ago
Find the surface area
Brut [27]

Answer:

Step-by-step explanation:

area of top=7×6=42 yd²

area of bottom=3×6=18 yd²

area of two rectangles=2[4×6]=48 yd²

area of two trapezoids=2[1/2(7+3)×3.5]=35 yd²

total surface area=42+18+48+35=143 yd²

7 0
3 years ago
A gazelle can change its speed from 0 to 45 mph in 2 seconds. What is the gazelle's acceleration?
Alex787 [66]

Answer:

average acceleration a=change in velocity / time it took to get to velocity  

a=(45-0)mph / 2s = 22.5 mph/hr/s

Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
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