All categories

2 years ago

Which expression is equivalent to 23+ (15+22) by the associative property of addition?

Mathematics

1 answer:

shepuryov [24]2 years ago

5 0

Answer:

i think the answer is C

You might be interested in

How do you determine the intercepts from an equation or graph

sukhopar [10]

When you want the x intercepts (x,0):. Set y=0 then solve for x

3 0

2 years ago

Read 2 more answers

The density of the American white oak tree is 752 kilograms per cubic meter. If the trunk of an American white oak tree has a ci

iVinArrow [24]

Here I hope this helps you out

8 0

2 years ago

Read 2 more answers

Given the vectors, a=3i+4j, b=-2i+5j, c=10i-j, d=-1/3i+5/2j, find -0.4a-0.3b+0.2d=?

sveta [45]

Answer:

$-\frac{2}{3}i - \frac{13}{5}j$

Step-by-step explanation:

-0.4(3i + 4i) - 0.3(-2i + 5j) + 0.2(- $\frac{1}{3}i$ + $\frac{5}{2}$ j)

-1.2i - 1.6j + 0.6i - 1.5j - $\frac{0.2}{3}$ i + 0.5j

Converting to fraction form;

$-\frac{6}{5}i + \frac{3}{5}i - \frac{1}{15}i - \frac{8}{5}j - \frac{3}{2}j + \frac{1}{2} j$

Solving the i part;

$\frac{-18i + 9i - i}{15}$ = $-\frac{2}{3}i$

Solving the j part;

$\frac{-16j-15j+5j}{10} = -\frac{13}{5}$ j

So -0.4a - o.3b + 0.2d = $-\frac{2}{3}i$ - $\frac{13}{5}j$

6 0

3 years ago

Find the perimeter of OQR if OQ=6.5. A. 6.1 B. 12.2 C. 13 D. 19.1

Svetach [21]

ANSWER

The correct answer is 19.1

EXPLANATION

The perimeter of triangle OQR is the sum of the distance around the triangle.

Thus,

$Perimeter=|OQ|+|OR|+|RQ|$

We can observe that two of the angles are equal.

The angles that are equal measures 62° each.

Therefore triangle OQR is an isosceles triangle. This means that

$|OQ|=6.5=|OR|$

Hence,

$Perimeter=6.5+6.5+6.1$

$Perimeter=19.1$ units.

3 0

2 years ago

Read 2 more answers

Please help me with this homework

torisob [31]

Answer:

9.81 x 100,000

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers