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Ugo [173]
2 years ago
10

7 + (2 + 6) 2 ÷ 4 ⋅ 1/2 Select one: a. 23 b. 18 c. 9 d. 8

Mathematics
2 answers:
mojhsa [17]2 years ago
5 0
Pemdas! You do 6+2 first and then multiply by 2. You get 16 and divide by 4, then divide by 1/2 and get 2. 2+7=9
Gekata [30.6K]2 years ago
4 0
These are one of those PEMDAS problems! This means go in order by parenthesis, exponents, multiplication, division, addition, and then subtraction.

So in parenthesis lets add 2 and 6
7 + (8)2 divided 4 times 1/2

Now multiply 8 and 2
7 + 16 divided 4 times 1/2

Now divided (because multiplication and division actually go together as like
one)
7 + 4 times 1/2

Now multiply 4 and 1/2
7 + 2

And now add 
9

That's your answer ^

Hope that helps!

- mathwizzard3
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Determined the quadrant for an angle with the following characteristics: cotθ>0 and cscθ>0.
oee [108]
\csc\theta=\dfrac1{\sin\theta}>0\implies\sin\theta>0

This happens whenever the terminal point of \theta lies in either the first or second quadrants.

Meanwhile,

\cot\theta=\dfrac1{\tan\theta}=\dfrac{\cos\theta}{\sin\theta}>0\implies\cos\theta>0

since you already know sine is positive. Cosine is positive when the angle lies in the first or fourth quadrant.

Sine and cosine are both positive only when \theta is the first quadrant, which means this angle's terminal point lies in the first quadrant (A).
6 0
3 years ago
Read 2 more answers
Choose the verbal descriptions that would best be modeled by polynomial functions. (Able to pick more than one)
mafiozo [28]

Answer:

i think it is AAAAA

Step-by-step explanation:

6 0
3 years ago
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Write the point-slope form of the equation of the line through the given point woth the given slope
Andrej [43]

Answer:

3.) \displaystyle y - 4 = 4[x - 1]

2.) \displaystyle y + 5 = 2[x + 2]

1.) \displaystyle y + 3 = 1\frac{1}{5}[x + 5]

Step-by-step explanation:

In the Point-Slope Formula, \displaystyle y - y_1 = m[x - x_1],all the negative symbols give the OPPOSITE terms of what they really are, so be EXTREMELY CAREFUL inserting the coordinates into the formula with their CORRECT SIGNS.

* \displaystyle 1\frac{1}{5} = \frac{6}{5}

I am joyous to assist you anytime.

3 0
2 years ago
Alice needs 3/7 kilograms of flour for making a cake. How many of flour does she needs for making 42 cakes?
Oduvanchick [21]
Hey there!

3/7 is needed for 1 cake

If she needs to make 42 cakes, then multiply the amount for 1 by 42

42 × 3/7 = 126/7 = 18

She needs 18 kilograms of flour to make 42 cakes

Hope this helps :)
3 0
3 years ago
Law of cosines: a2 = b2 + c2 – 2bccos(A) What is the measure of S to the nearest whole degree? 19° 26° 30° 33°
sertanlavr [38]
We know that
applying the law of cosines
a² = b²+ c²<span> – 2*b*c*cos(A)
cos (A)=[b</span>²+c²-a²]/[2*b*c]
in this problem
a=10
b=17
c=18
so
cos (A)=[17²+18²-10²]/[2*17*18]-----> cos (A)=0.8382
A=arc cos (0.8382)-----> A=33.05°-----> A=33°

the answer is
33 degrees
7 0
3 years ago
Read 2 more answers
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