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3 years ago

Can someone give me the answers?

Mathematics

2 answers:

balu736 [363]3 years ago

8 0

What the guy said at the bottom is the best choice

aniked [119]3 years ago

6 0

Answer:

Step-by-step explanation:

3 1

9 3

15 5

21 7

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What is the equation of a line that passes through the point (8, −2) and is parallel to the line whose equation is 3x + 4y = 15?

klasskru [66]

Step 1: 3x + 4y = 15
Step 2: Get in Slope intercept form = y=mx+b
Step 3: Subtract 3x from both sides since your trying to get Y alone
Step 4: 4y = -3x + 15
Step 5: Divide 4 from both sides since 4 cannot go into -3 or 15 leave it as is
Step 6: Y = $- \frac {3}{4}$ + $\frac{15}{4}$
Step 7: Point slope form= y-y=m(x-x)
Step 8: (8, -2) are your points 8x and -2y
Step 9: Substitute
Step 10: y - 2 = $-\frac{3}{4}$ (x - 8)
Step 11: Distribute
Step 12: y - 2 = $-\frac{3}{4} x$ + -6
Step 13: Add 2 to both sides
Answer : y = $- \frac{3}{4} x$ + 4

5 0

3 years ago

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Give the linear system: 3x + 7y = 20 x ? 4y = 9 Identify the values for the elements in the coefficient matrix: A = a11 a12 a21

laiz [17]

Answer: a11 = 3, a12 = 7, a21 = 1, a22 = -4

<u>Explanation:</u>

3x + 7y = 20

x - 4y = 9

A = $\left[\begin{array}{ccc}3&7&20\\1&-4&9\end{array}\right]$

<u>column 1 </u> <u>column 2</u>

row 1: (a11) 3 (a12) 7

row 2: (a21) 1 (a22) -4

4 0

3 years ago

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Suppose Aji and sunshine have to pay $11 in royalties for each Beatles song and $7 for each Donovan song. How many of each type

andrey2020 [161]

To minimize their royal costs to $200, the number of Donovan songs to include is <u>15</u> and the number of Beatles songs to include is <u>5</u>.

<h3>What are ratios?</h3>

Ratios are numerical relationships between variables that show how much each variable is contained in another.

Ratios are stated in fractions, percentages, or decimals.

<h3>Data and Calculations:</h3>

Total songs to include in the song = 20

The ratio of Donovan and Beatles = 5:1.5

The number of Donovan songs to include = 15 (20/6.5 x 5)

The number of Beatles songs to include = 5 (20/6.5 x 1.5)

Royalty cost per Donovan song = $11

Royalty cost per Beatles song = $7

Total royalty costs for Donovan and Beatles song = $200 ($11 x 15 + $7 x 5)

Thus, the number of Donovan songs to include is <u>15</u> and the number of Beatles songs to include is <u>5</u>.

Learn more about ratios at brainly.com/question/2914376

#SPJ1

<h3>Question Completion:</h3>

Aji and Sunshine want to make a CD of songs from the 1960s to donate to their school library to be broadcast during school picnics. Sunshine's parents were big fans of the 60s singer Donovan, and they named her after his song "Sunshine Superman." Aji's folks were devotees of the Beatles. Aji and Sunshine want their CD to consist entirely of songs by Donovan and the Beatles. Because Sunshine is named after a Donovan song, she wants to include at least as many Donovan songs as Beatles songs. Aji agrees. In return, Sunshine agrees to include at least five Beatles songs. 5 1.5 To provide enough variety to make the mix interesting, they decide to include at least 20 songs altogether.

3 0

2 years ago

Determine whether each quadrilateral is a parallelogram. Justify your answer. Yes/No? Reason... opposite side congruent, opposit

Alex_Xolod [135]

Answer:

Yes! The given quadrilateral represents Parallelogram.

Reason: The given quadrilateral has opposite sides congruent.

Step-by-step explanation:

Given the quadrilateral with the four vertices.

Now in order to determine whether the given quadrilateral is a parallelogram or not, we need to check whether the opposite sides are congruent or not.

It is clear that the given quadrilateral has opposite sides congruent.

Therefore, the given quadrilateral represents Parallelogram.

Hence,

Yes! The given quadrilateral represents Parallelogram.

Reason: The given quadrilateral has opposite sides congruent.

7 0

3 years ago

I WILL GIVE BRAINLY HELP ME PLSSS

Gnom [1K]

Answer:

I believe (D)

Step-by-step explanation:

-5x + 7 = -13

-7 -7

-5x = -20

-5/-5 -20÷-5

x=4

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3 years ago

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