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nadya68 [22]
2 years ago
13

Help help help help

Mathematics
1 answer:
harina [27]2 years ago
5 0

Answer:

-1

Step-by-step explanation:

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PB_WITH_FSA_DIAG_6825_OL_FY21
astra-53 [7]

Answer:

uhm.....what?

Step-by-step explanation:

8 0
3 years ago
2r2 + 3s3 − r2 + 4t2 − r2 if r = −2, s = −3, and t = 5.
Elza [17]

First, simplify the expression 2r^2 + 3s^3 - r^2 + 4t^2 - r^2. Here you have three terms with r^2, group them in the following way:

2r^2 + 3s^3 - r^2 + 4t^2 - r^2=2r^2-r^2-r^2+3s^3+4t^2=(2r^2-r^2-r^2)+3s^3+4t^2=

=r^2(2-1-1)+3s^3+4t^2=3s^3+4t^2.

Then substitute s=-3 and t=5:

3s^3+4t^2=3\cdot (-3)^3+4\cdot 5^2=3\cdot (-27)+4\cdot 25=-81+100=19.

Answer: 19.

3 0
3 years ago
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you earn a salary of $40,000 per year amd decide to save 20%of your gross pay.you then set a goal of creating a $16,000 emergenc
sveticcg [70]
2 years ( 20% of $40,000 = $8,000)
6 0
3 years ago
I am in pre-algebra and i need help answering a question for homework..
Elenna [48]

the answer is x is equal to -4

x=-4

3 0
3 years ago
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Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = 4x2 + 5x – 1.
Murljashka [212]
Graph the parabola using the direction, vertex, focus, and axis of symmetry.
Direction: Opens Up
Vertex: <span>(−<span>5/8</span>,−<span>41/16</span>)</span>
Focus: <span>(−<span>5/8</span>,−<span>5/2</span>)</span>
Axis of Symmetry: <span>x=−<span>5/8</span></span>
Directrix: <span>y=−<span>21/8</span></span><span><span>   x.        y
</span><span><span>−3.       </span>20
</span><span><span>−2.        </span>5
</span><span><span>−<span>5/8.    </span></span><span>−<span>41/16
</span></span></span><span> 0.          <span>−1
</span></span><span>1.           <span>8


</span></span></span>

3 0
3 years ago
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