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3 years ago

Wednesday 2pm

Mathematics

1 answer:

faltersainse [42]3 years ago

5 0

Answer:

3 and 18

I HOPE IT WILL HELP YOU?:-) 

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In base, rate, and percent problems, the word “of” points to this

Marysya12 [62]

Answer:

The word "of" refers to multiplication.

Step-by-step explanation:

Multiplication is what to do in all word problems when we see the word "of"

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4 years ago

Jane & Jim spent the same amount of money today. If Jim spent

Assoli18 [71]

Answer:4$

Step-by-step explanation

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3 years ago

What is the answer for 7.42 ÷ 1.75 = ______

Colt1911 [192]

Answer:

4.24

Step-by-step explanation:

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3 years ago

Read 2 more answers

Determine the density in g/cm3 of a mineral that has a volume of 3.8 cm3 and a mass of 22.4 g.

kherson [118]

Answer:

5.89 g/cm³

Step-by-step explanation:

givens,

Mass = 22.4 g

volume = 3.8 cm³

Density = mass / volume

= 22.4 / 3.8

= 5.89 g/cm³

4 0

4 years ago

What is the area of a triangle whose vertices are D(3,3), E(3,-1), and F(-2,-5)?

Elis [28]

There is a formula which employs the use of determinants and which helps us calculate the area of a triangle if the vertices are given as $(x_1,y_1),(x_2,y_2),(x_3,y_3)$ . The formula is as shown below:

Area= $\frac{1}{2}\begin{vmatrix}x_1&y_1&1 \\ x_2&y_2&1\\ x_3&y_3&1\end{vmatrix}$

Now, in our case, we have: $(x_1,y_1)=(3,3)$

$(x_2,y_2)=(3,-1)$ , and

$(x_3,y_3)=(-2,-5)$

Thus, the area in this case will become:

Area= $\frac{1}{2}\begin{vmatrix}3&3&1 \\ 3&-1&1\\ -2&-5&1\end{vmatrix}$

Therefore, Area= $\frac{1}{2}\times [[3(-1\times 1-(-5)\times 1]-3[3\times 1-(-2)\times 1]+1[3\times -5-2]]= \frac{1}{2}\times -20=-10$

We know that area cannot be negative, so the area of the given triangle is 10 squared units.

3 0

3 years ago