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GREYUIT [131]
3 years ago
12

830 + ? = 5983? + 295 = 60002794 + ? = 12347​

Mathematics
1 answer:
nalin [4]3 years ago
8 0

Answer:

830+ 5153=5983

5705 +295 = 6000

2794 + 9553 =12347

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A dot plot titled hours of practice this week going from 0 to 4. 0 has 1 dot, 1 has 2 dots, 2 has 0 dots, 3 has 4 dots, and 4 ha
WITCHER [35]

Answer:

1, 2, 3, 5

Step-by-step explanation:

I took the quiz

4 0
4 years ago
Write the expression as a trinomial <br><br> (x-2)(5+x)
alisha [4.7K]

Answer:

x² + 3x - 10

Step-by-step explanation:

(x-2)(5+x)

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simplifying:

x² + 3x - 10

3 0
3 years ago
Find three consecutive integers whose sum is 216. (Hint: if n represents the smallest of the three integers, n + 1 and n + 2 rep
AlladinOne [14]

Answer:

71, 72, 73

Step-by-step explanation:

So we want to find three consecutive integers that equal 216.

Let the first integer be n.

Then the second integer is n+1, and the third integer is n+2.

Thus:

n+(n+1)+(n+2)=216

Combine like terms:

3n+3=216

Subtract 3 from both sides:

3n=213\\

Divide 3 from both sides:

n=71

So, the first term is 71.

And the other two is 72 and 73.

And we are done :)

5 0
3 years ago
Identify a sequence of transformations that maps triangle ABC onto triangle A"B"C In the image
Norma-Jean [14]
Clockwise 90 ° rotation; enlargement
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4 years ago
If tan a = 3/4 find the value of sin 3a
Effectus [21]
T=-1

sinA=sin(π/2-3A), A=2nπ+π/2-3A, 4A=2nπ+π/2, A=nπ/2+π/8 where n is an integer.

Also, π-A=2nπ+π/2-3A, 2A=2nπ-π/2, A=nπ-π/4.

The hard way:

cos3A=cos(2A+A)=cos(2A)cosA-sin(2A)sinA.

Let s=sinA and c=cosA, then s²+c²=1.

cos3A=(2c²-1)c-2c(1-c²)=c(4c²-3).

s=c(4c²-3) is the original equation.

Let t=tanA=s/c, then c²=1/(1+t²).

t=4c²-3=4/(1+t²)-3=(4-3-3t²)/(1+t²)=(1-3t²)/(1+t²).

So t+t³=1-3t², t³+3t²+t-1=0=(t+1)(t²+2t-1).

So t=-1 is a solution.

t²+2t-1=0 is a solution, t²+2t+1-1-1=0=(t+1)²-2, so t=-1+√2 and t=-1-√2 are solutions.

Therefore tanA=-1, -1+√2, -1-√2 are the three solutions from which:

A=-π/4, π/8, -3π/8 radians and these values +2πn where n is an integer.

Replacing π by 180° converts the solutions to degrees.

3 0
3 years ago
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