MATHEMATICS HIGH SCHOOL

T(t)T, left parenthesis, t, right parenthesis models the temperature (in degrees Celsius) in Windhoek, Namibia when it's ttt hours after midnight on a given day. ttt 666 999 131313 T(t)T(t)T, left parenthesis, t, right parenthesis 191919 252525 313131 When did the temperature increase faster? Choose 1 answer: Choose 1 answer: (Choice A) A Between 6\text{ am}6 am6, start text, space, a, m, end text and 9\text{ am}9 am9, start text, space, a, m, end text (Choice B) B Between 9\text{ am}9 am9, start text, space, a, m, end text and 1\text{ pm}1 pm1, start text, space, p, m, end text (Choice C) C The temperature increased at the same rate over both intervals

Answers

Answer 1
Answer:

Answer:

Between 6 am and 9 am

Step-by-step explanation:
Answer 2
Answer:

Answer:

Step-by-step explanation:

leave a rating pls :)

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Which pair of measurements is not equivalent?24 feet, 8 yards 24 inches, 2 feet 10 feet, 120 inches 3 miles, 15,480 feet

Round 14494 to the nearest thousand feet

Answers

14,000 because 494 would round down since it is not above 500.

Simplify this;
what is -2x + x?

Answers

Answer:

-x

Step-by-step explanation:

Note that when there is a standalone variable (such as the x in this example), it typically actually means 1x. (If it is -x, it will be -1x.) However, you do not write 1 in front, as it is presumed.

Subtract the coefficient of each terms:

1x - 2x = -1x

-x is your simplified form.

Answer is -x

• If a term doesn’t have a coefficient is considered that the coefficient is 1
-2x + 1x
• collect like terms by calculating the sum of the coefficients
(-2 + 1)x
• Write the sum
-1x
• The coefficient negativeone doesn’t have to be written but the sign remains
-x

PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!!Find IJ.

Write your answer as an integer or as a decimal rounded to the nearest tenth.

IJ =

Answers

Yo sup??

we have to apply trigonometric ratios ie sine

sin63=IJ/HJ

IJ=HJ*sin63

=8.0

Hope this helps.

Answer:

The answer should be 8.  Hope this help you out.

A store offers a 15% discount on a skirt. If Bernice pays $40.80 for the skirt, what was the list price of the skirt before the discount? $61.00

Answers

The answer to this question is: x=48

Answer: 48

Step-by-step explanation:

Did the test got it right

One positive number exceeds 4 times another positive number by 3. The product of the two numbers is 351. What are the two numbers? A) 6 and 9
B) 6 and 24
C) 9 and 39
D) 25 and 29

Answers

Hello,
Answer C 9 and 39.

Let a the first and b the second
a=4b+3
a*b=351

==>b*(4b+3)=351
==>4b²+3b-351=0
Δ=9+4*4*351=5625=75²
==>b=(-3-75)/8 =-9.75 ==>a=4*(-9.75)+3=-36 (excluded) a>0
or b=(-3+75)/8=9 and a=4*9+3=39

Use Gauss-Jordan elimination to solve the following linear system.x – 6y – 3z = 4
–2x – 3z = –8
–2x + 2y – 3z = –14

Answers

\begin{cases}x-6y-3z=4&(1)\n-2x-3z=-8&(2)\n-2x+2y-3z=-14&(3)\end{cases}

First eliminate y by adding (1) to three times (3). This gives

(x-6y-3z)+3(-2x+2y-3z)=4+3(-14)\iff -5x-12z=-38

This reduces the system of one of two equations and two unknowns:

\begin{cases}-5x-12z=-38&(1)^*\n-2x-3z=-8&(2)^*\end{cases}

You can eliminate z by subtracting (1)^* and four times (2)^* to get

(-5x-12z)-4(-2x-3z)=-38-4(-8)\iff3x=-6\implies x=-2

Back-substitute to find z and y. You should end up with (x,y,z)=(-2,-3,4).

Answer:

(-2,-3,4)

Step-by-step explanation:
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