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antiseptic1488 [7]
3 years ago
7

3x to the second power + 4x -7

Mathematics
1 answer:
slava [35]3 years ago
6 0
:) ksskskskakakakakakaoaoaoa
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KonstantinChe [14]

\bf 40a^2+20a-30=(-1)(15a^3+30)\implies 40a^2+20a~~\begin{matrix} -30 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~=-15a^3~~\begin{matrix} -30 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix} \\\\\\ 40a^2+20a=-15a^3\implies 15a^3+40a^2+20a=0\implies 5a(3a^2+8a+4)=0 \\\\\\ 5a(3a+2)(a+2)=0\implies a= \begin{cases} 0\\ -\frac{2}{3}\\ -2 \end{cases}

7 0
3 years ago
Mary and John are competing in a food competition. Their dish is graded on the following categories each worth 18 points: taste,
laiz [17]

Answer:

A.54

B. Mary has 38 points and John has 38 point so they are tied

6 0
4 years ago
• A florist is arranging flowers for a wedding. For every 2 pink flowers in a vase, he also includes 8 white
gregori [183]

Answer: It's 1 - 4

2 -8

3 -12

6 - 24 Your welcome

Step-by-step explanation:

6 0
3 years ago
Is 3x + 4 proportional? Explain.
Solnce55 [7]

Answer:

Since it is a linear function, it is a directly proportional function

Step-by-step explanation:

i looked it up

6 0
3 years ago
Read 2 more answers
What is the image point of (0,1) after the transformation D4 R90?<br> Please and thank you
Ede4ka [16]

Answer:

Image point → (-4, 0)

Step-by-step explanation:

Coordinate of a point → (0, 1)

Rule for the transformation has been given as,

D₄ o R₉₀

First use R₉₀ → Rotation of the point by 90° counterclockwise

Rule for the rotation of a point (x, y) by 90° counterclockwise about the origin,

(x, y) → (-y, x)

(0, 1) → (-1, 0)

Further use D₄ → Dilation of the point by a scale factor of 4 about the origin

If a point (x, y) is dilated by a scale factor 'k' about the origin rule for the dilation is,

(x, y) → (kx, ky)

By applying this rule,

(-1, 0) → (-4, 0)

Therefore, image point will be → (-4, 0)

5 0
3 years ago
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