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Snowcat [4.5K]
3 years ago
12

I don't get what it is asking me to do

Mathematics
1 answer:
Ksju [112]3 years ago
7 0
What you do here is you input 11 in as a value of x:
t=3n-7\\
t=3(11)-7\\
t= 33-7\\\\
t=26
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Factor completely. 640-10x^2
Oxana [17]

Answer:

10 (8-x)(8+x)

Step-by-step explanation:

640-10x^2

Factor out 10

10 (64 - x^2)

Notice that inside the parentheses is the difference of squares

10 ( 8^2 - x^2)   and a^2 - b^2 = (a-b) (a+b)

10 (8-x)(8+x)

5 0
3 years ago
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Please help me with number 19 a and b
kondor19780726 [428]
A.
The second and first quadrant, because the hour and temperatures are unlikely to be negative numbers. All positive numbers for both X and Y values are in the second quadrant. If the hour is before noon, then the X value will venture into quadrant one. The diagram shows the quadrants in a graph.

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6 0
4 years ago
I need help can someone please help me
ExtremeBDS [4]

Answer:

its 33 cm

Step-by-step explanation:


6 0
4 years ago
A sailboat’s sail has three sides that are all the same length. Each side measures x−10 units. The sail’s perimeter is 63 units.
SSSSS [86.1K]

Answer:

Step-by-step explanation:

5 0
3 years ago
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This using the substitution method
Gnesinka [82]
4x + 3y = 26
x = 3/2y + 2

solving for y:

4 (3/2y + 2) + 3y = 26
6y + 8 + 3y = 26
9y + 8 =26
9y = 18
y = 2

solving for x:
x = 3/2(2) + 2
x = 3 + 2
x = 5

done.
**optional: use second equation to check
8 0
3 years ago
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