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malfutka [58]
3 years ago
12

Which statements must be true about the reflection of ΔXYZ across ?

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
7 0

m<X'Y'Z' = 90 degrees

m<MCY = 90 degrees

BZ' ~= BZ

ZZ' || YY'

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What are all solutions to the differential equation dy/dx=sec^2*x ?
zysi [14]

Answer:

y=tanx+C

Step-by-step explanation:

\frac{dy}{dx}  =  {sec}^{2}  \: x \\  \\ dy = {sec}^{2}  \: x \: dx \\  integrating \: both \: sides \\  \\  \int \:1\: dy =  \int {sec}^{2}  \: x \: dx \\  \\  \huge \red{ \boxed{ \therefore \: y = tan \: x + c}} \\

4 0
3 years ago
In the expression 10^5, what is the Base Number? What is the Exponential Number?
Flauer [41]

Answer:

10 is the base number, and 5 is the exponent

Step-by-step explanation:

5 0
3 years ago
Jim needs to mix a medication with water to make the appropriate solution. The medications says to mix 3 oz of medication with 5
skelet666 [1.2K]

Answer:

38 or 38.33 cups of water.

Step-by-step explanation:

You need 5 cups of water for every 3 ounces of medication. We can set up a proportion: #oz of medication/#cups of water= #oz of medication/# cups of water. We can plug in some numbers from the problem.

3/5=23/n. You can use any variable, but I'm using n for how many cups of water Jim will need for 23 ounces of medication.

We can cross multiply: 3*n=5*23.

3n=115

We divide both sides by 3.

n=38.3333333.......

Rounding to the nearest whole number, Jim will need 38 cups of water, or 38.33 cups if you're rounding to the nearest hundredth.

Hope this helps :)

6 0
3 years ago
Help please and show the steps! thank you!​
san4es73 [151]

Answer:

#1.  x = -1

Answer = 8

#2. x = 1/5

Answer = 344/25

#3. x = 14

Answer =  13328

Step-by-step explanation:

#1. a. plug in -1

f(-1)= (5(-1)^3) - (2(-1)^2 - (-1) + 14

b. Solve the exponents.

(5(-1)^3)

(5x-1)

(-5) - (2(-1)^2) - (-1) + 14

(2(-1)^2)

(2x1)

(-5) - (2) - (-1) +14

c. simplify.

(-5) - (2) + 1 + 14

-7 + 15

8

#2.

f(1/5)= (5(1/5)^3) - (2(1/5)^2 - (1/5) + 14

(5(1/5)^3)

(5 x 1/125)

(1/25) - (2(1/5)^2)

(2 x 1/25)

(2/25)

(1/25) - (2/25) - (1/5) +14

(-1/25) - (1/5) +14

Note: (1/5) turns into (5/25) so it can be subtracted.

-6/25 + 14

Note: 14 turns into 350/25 so it can be added.

350/25 - 6/25 = 344/25

#3.

f(14)= (5(14)^3) - (2(14)^2 - (14) + 14

Note: Normally you do the exponents first but I'm just going to casually take out the two 14s at the end cause they cancel each other out.

f(14)= (5(14)^3) - (2(14)^2)

( 5 (14^3))

(5 x  2744)

(13720) - (2(14^2))

(2 (14^2))

(2x196)

392

(13720) - 392

13328

Good Luck!

3 0
3 years ago
Walter is helping to make cookies for a basketball tournament. He's made 15 cookies so far. His coach asked him to make at least
seraphim [82]

Answer: First Option

Walter needs to make at least 5 more cookies but no more than 40

5 \leq x \leq 40

Step-by-step explanation:

If we call x the number of cookies that Walter needs to make, then we know that the amount of cookies will be:

x +15

Then this amount must be greater than or equal to 20 and must be less than or equal to 55 then.

x + 15 \geq20 and x + 15 \leq55

This is:

20 \leq x + 15 \leq 55

We solve the inequality for x.

20-15 \leq x + 15-15 \leq 55-15\\\\5 \leq x \leq 40

Then the amount of cookies that Walter must make must be greater than or equal to 5 and less than or equal to 40

7 0
4 years ago
Read 2 more answers
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