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3 years ago

Simplify 14 + 13 − (12 + 11). A) 0 B) 1 C) 4 D) 10

2 answers:

7 0

The answer is C) 4
Explanation: Use order of operations (PEMDAS)
Add what’s in the parenthesis (12+11) = 23
Then add 14+13=27
27 — 23 = 4

never [62]3 years ago

4 0

C. 4
14 + 13 - (23)
27 - 23
4

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Cidnee is weighing combinations of geometric solids. She found that 4 cylinders and 5 prisms weigh 32 ounces and that 1 cylinder

vitfil [10]

Answer:

The weights of each cylinder and prism are 3 and 4 ounces, respectively.

Step-by-step explanation:

Let be $x$ and $y$ the masses of a cylinder and a prism, measured in ounces, respectively. After a careful reading of the statement we get the following linear equations by interpretation:

i) <em>She found that 4 cylinders and 5 prisms weigh 32 ounces:</em>

$4\cdot x +5\cdot y = 32\,oz$ (Eq. 1)

ii) <em>And that 1 cylinder and 8 prisms weigh 35 ounces:</em>

$x + 8\cdot y = 35\,oz$ (Eq. 2)

Now we solve the system of linear equations algebraically:

From (Eq. 2):

$x = 35 - 8\cdot y$

(Eq. 2) is (Eq. 1):

$4\cdot (35-8\cdot y) + 5\cdot y = 32$

$140-32\cdot y +5\cdot y = 32$

$32\cdot y - 5\cdot y = 140-32$

$27\cdot y = 108$

$y = 4\,oz$

From (Eq. 2):

$x = 35 - 8\cdot (4)$

$x = 35 - 32$

$x = 3\,oz$

The weights of each cylinder and prism are 3 and 4 ounces, respectively.

4 0

3 years ago

What are the solution(s) to the quadratic equation 9x2 = 4?

Kaylis [27]

Answer:

Option B.

Step-by-step explanation:

The given quadratic equation is

$9x^2=4$

We need to find the solution of given quadratic equation.

Divide both sides by 9.

$\frac{9x^2}{9}=\frac{4}{9}$

$x^2=\frac{4}{9}$

Taking square root on both sides.

$x=\pm\sqrt{\frac{4}{9}}$

$x=\pm\frac{2}{3}$

The solution of given equation are $x=\frac{2}{3}$ and $x=-\frac{2}{3}$ .

Therefore, the correct option is B.

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3 years ago

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Not sure if u can do it without a protractor but please help

lana [24]

Answer:

i dont know the other questions but i do know the last one and the answer is rhombus.

8 0

3 years ago

When shopping for a baby doll for her daughter, Ms. Martin found that the price of six baby dolls was less than $118. Which of t

otez555 [7]

The answer would be 6 × b < $118, since the price, b, of six dolls is less than (<) $118.

7 0

3 years ago

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Rewrite 5 times X + 5 x 8 in parenthesies

sveta [45]

Answer:

5(X+5x8)

Step-by-step explanation:

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3 years ago

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