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3 years ago

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write an expression to model the following situation: when rafa woke up, the temperature was –9°c. by noon, the temperature had

increased by 7°c. what was the temperature at noon? a. –9 – 7 b. 9 7 c. –9 7 d. 9 – 7

1 answer:

Julli [10]3 years ago

7 0

The answer is -9+7 because it INCREASED which means adding ( + ).

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Choose the equation of a circle with radius 6 and center (2, -3).

Rufina [12.5K]

Answer: $(x-2)^2 + (y+3)^2 = 36\\\\$

Work Shown:

$(x-h)^2 + (y-k)^2 = r^2\\\\(x-2)^2 + (y-(-3))^2 = 6^2\\\\(x-2)^2 + (y+3)^2 = 36\\\\$

Note that (h,k) = (2,-3) is the center and r = 6 is the radius. The last line is not expanded out using the FOIL rule because its common practice to leave it in $(x-h)^2 + (y-k)^2 = r^2\\\\$ form. This form allows the reader to quickly determine the center and radius (rather than have to do a lot of algebraic steps before hand).

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1 year ago

Please help I got the answer wrong-

puteri [66]

Answer:

$x {}^{2} = 150$

Step-by-step explanation:

What I did was

$5 \times 5 = 25$

then I did

$5 \times 5 = 25 \times 5 = 150$

and I'm hoping 150 is the answer. HOPE THIS HELPED

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2 years ago

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chubhunter [2.5K]

Answer:

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Step-by-step explanation:

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2 years ago

Time sensitive question. Find the sum of the first 26 terms of an arithmetic series whose first term is 7 and 26th term is 93.

lisabon 2012 [21]

ANSWER

$S_{26}=1300$

EXPLANATION

The sum of an arithmetic sequence whose first term and last terms are known is calculated using

$S_{n}= \frac{n}{2} (a + l)$

From the given information, the first term of the series is

$a = 7$

and the last term of the series is

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The sum of the first 26 terms is

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2 years ago

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spin [16.1K]

Answer:

the answer is $\frac{25}{15}\\$ Hope this helps :}

Step-by-step explanation:

Here are 2 bowls. One of them has 25 gems and the other has 15 gems. Some of them are red. All the gems from the two bowls are now put into a third bowl. What fraction of the gems in the third bowl will be red?

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2 years ago