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2 years ago

7

Help me now pls I need it

1 answer:

Elena L [17]2 years ago

4 0

Answer:

130

Step-by-step explanation:

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Use the Order of Operations to simplify: 3(8 - 4*5)

aleksklad [387]

Answer:

<h2>-36</h2>

Step-by-step explanation:

$3\left(8-4\cdot \:5\right)\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Calculate\:within\:parentheses}\:\left(8-4\cdot \:5\right)\::\quad -12\\=3\left(-12\right)\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:3\left(-12\right)\:\\:\quad -36$

3 0

2 years ago

Read 2 more answers

Calculate the length b to two decimal places.

Andrej [43]

Answer:

B. 21.64

Step-by-step explanation:

We have been given a triangle and we are asked to find the length of AC (b).

We will use law of cosines to find the length of side AC.

$c^{2}=a^{2}+b^{2}-2ab \text{ cos }\theta$

Upon substituting our given values in the formula we will get,

$(AC)^{2}=15^{2}+12^{2}-2\times 15\times 12 \text{ cos}(106)$

$(AC)^{2}=225+144-360\text{ cos}(106)$

$(AC)^{2}=369-360(-0.275637355817)$

$(AC)^{2}=369+99.22944809412$

$(AC)^{2}=468.22944809412$

Upon taking square root of both sides of our equation we will be get,

$AC=\sqrt{468.22944809412}$

$AC=21.6386101238993629\approx 21.64$

Therefore, the length of b is 21.64 and option B is the correct choice.

6 0

2 years ago

Will give brainliest and 5stars and thank you if youre answer is right

slega [8]

Step-by-step explanation:

since

25⁰= 1 minute

x⁰ = 11 minutes

cross multiply

25 x 11= x

x= 275⁰

temperature after being turned on=275⁰

temperature after 11 minutes= 275⁰ + 75⁰= 350⁰

temperature(x) after being turned on

25tt=x

temperature (x) after minutes

x= 25tt + 75⁰

8 0

2 years ago

What is the area of the picture and frame shown? Write your answer as a mixed number in simplest form.

SVETLANKA909090 [29]

84.5833333 is the answer, I believe

5 0

2 years ago

Read 2 more answers

HELP ME AND PLS AND THXS <br> (-1, -16)<br><br><br> (3, 0)<br><br><br> (-5, 0)<br><br><br> (0, -15)

n200080 [17]

Answer:

A. (-1, -16)

Step-by-step explanation:

8 0

2 years ago