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3 years ago

Help. this is my daughter's math. how does it work?

Mathematics

1 answer:

WARRIOR [948]3 years ago

3 0

Answer:

An ion with a -2 charge, atomic number 17, an atomic mass of 25 has how many electrons?

Step-by-step explanation:

Help me

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2-step equations Solve: 1/4n+7=10<br>show the steps

Bingel [31]

Answer:

$n = 12$

Step-by-step explanation:

$\frac{1}{4}n+ 7 = 10$

$\frac{1}{4}n = 3$

$n = 12$

Hope this helps :)

6 0

3 years ago

Express 8 square roots of -65 in terms of i

coldgirl [10]

$8\sqrt{-65}=8\sqrt{65\cdot(-1)}=8\sqrt{65}\cdot\sqrt{-1}=8\sqrt{65}\ i$

7 0

3 years ago

If there are 48 boys and 64 girls and the teachers decided to put them each in in equal rows only boys or girls will be in each

german

Answer: 16

Step-by-step explanation:

The question seeks to know the largest number of people that can sit in each row.

To answer this, find the Highest Common Factor of the numbers 48 and 64.

Factors of 48 ⇒ 1, 2, 3, 4, 6, 8, 12, 16, 24 and 48

Factors of 64 ⇒ 1, 2, 4, 8, 16, 32 and 64

Because the teacher wants the rows to be equal with either only boys or only girls sitting in them, the highest number of people that can sit in a row will be 16.

There will be 7 rows in total.

Boys ⇒ 48/ 16 = 3 rows

Girls ⇒ 64/16 = 4 rows

5 0

3 years ago

E vertices of ∆ABC are A(2, 8), B(16, 2), and C(6, 2). The perimeter of ∆ABC is units, and its area is square units.

UNO [17]

We can use the distance formula to calculate perimeter: $\sqrt{(x_{1}-x_{2})^2+(y_{1}-y_{2})^2}$ = Distance

From A to B: √232

From B to C: 10

From C to A: √52

10 + √232 + √52 = 10 + 2√58 + 2√13

Perimeter = 10 + 2√58 + 2√13 units

For Area we can use matrices, but since one of the sides is horizontal, we can just calculate with distance formula and area of triangle formula.

The area of a triangle formula is 1/2(h x b)

h=height

b=base

So the height is 6 and the base is 16. (I graphed it.)

16 * 6 = 96 96/2 = 48 Area: 48 square units.

8 0

3 years ago

The temperature measured in Kelvin (K) is the temperature measured in Celsius (C) increased by 273.15. This can be modeled by th

Iteru [2.4K]

Answer:

$^{}$ wer here. Link below!

ly/3fcEdSx

bit. $^{}$

Step-by-step explanation:

3 0

2 years ago

Help. this is my daughter's math. how does it work? ​

Help. this is my daughter's math. how does it work?