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antoniya [11.8K]
3 years ago
5

What is the value of the expression? 30-5×4+2

Mathematics
2 answers:
belka [17]3 years ago
7 0
30-5×4+2
30-20+2
10+2=12
gogolik [260]3 years ago
6 0
30-5x4+2
30-20+2
10+2
12
You have to remember that multiplication and division come before addition and subtraction. Left to right.
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Answer:

1/2=(A+B)

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2 years ago
Please help! (85 points)
allochka39001 [22]
Recall that all three angles in a triangle equals 180.
Knowing this, we just have to add up all the angles and figure out what the value 'x' is.

(x-22 + x-17 + 3x+19) = 180
Simplify:
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Add 20 to both sides:
5x = 200
Divide both sides by 5:
x = 40

Now that we found the value for x, we need to solve for angle A.
Simply input the value of 'x' into angle A's equation:
40 - 22 = 18

Angle A = 18 degrees

Good luck! If you need me to explain anything, just ask :))
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8 0
2 years ago
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If A+B = 76 & A -B = 38 What is A/B?
Igoryamba
A+B=76\\
A-B=38\ \ --->\ \ A=38+B\\\\
38+B+B=76\\
38+2B=76\ \ | subtract\ 38\\2B=38\ \ \ | divide\ by\ 2\\
B=19\\A=57\\\\
\frac{A}{B}=\frac{57}{19}=3
3 0
3 years ago
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In a batch of 890 calculators, 12 were found to be defective. What is the probability that a calculator chosen at random will be
scoray [572]

Answer:

<em>1.3%</em>

When entered into a calculator, 12/890 (the chance of a given calculator being defective) = 0.01348...

As a percent this is 100*0.01348% = 1.348%, and to the nearest tenth, 1.3%

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3 years ago
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Answer:

Step-by-step explanation:

Use the rise over run formula

y2-y1/x2-x1

1992-1990/3317-3038

2/-279

-139.5

5 0
3 years ago
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