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3 years ago

Explain the full answer

Mathematics

1 answer:

Vilka [71]3 years ago

3 0

Rememer you can do anything to an equaiton as long as you do it to both sides

and the erased answer is correct

10=-6.5+n
add 6.5 both sides
10+6.5=6.5-6.5+n
16.5=0+n
16.5=n

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William is 3 years older than Charmaine.The sum of 3 times charmaines age and 2 times Williams age is 76.How old are William and

astra-53 [7]

Charmaine= x
William=x+3
3 times Charmaine = 3x
2times William = 2x+6
5x+6=76
5x=76-6
5x=70
X=14
Charmaine is 14
William is 3 years older so is 17

Check:
17x2= 34
14x3=42
34+42=76

So Charmaine is 14
William is 17

4 0

3 years ago

How is 340 divided by 17 reasonable

vivado [14]

17 goes into 34 two times

and goes into 0 zero times

So 340 / 17 = 20

8 0

3 years ago

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Brain cells aren’t working right now sorry please help

balandron [24]

Answer:

Step-by-step explanation:

6 lol

7 0

3 years ago

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Geometry math question please help

stiks02 [169]

You need this key result: in any polygon, the sum of the interior angles is

$(n-2)\times 180$

where $n$ is the number of sides of the polygon.

Your polygon has seven sides, and the measures of all angles are given. So, we can write

$2x+4x+4x+4x+4x+2x+10x = (7-2)\times 180$

Again, we've simply written that the sum of all interior angles is the number of sides, minus two, times 180.

We can simplify both sides: we sum like terms on the left hand side, and we easily compute the right hand side:

$30x = 5\times 180 = 900$

and we can solve this equation for $x$ by dividing both sides by 30:

$x = \cfrac{900}{30} = 30$

Finally, the required angles is $2x = 2\times 30 = 60$

5 0

3 years ago

A box of mixed nuts packs weighs 16 1/2 ounces. Each mixed nuts pack weighs 1 3/8 ounces. How many mixed nuts snack packs are in

vfiekz [6]

12 mixed nuts packs

Explanation:

The box weighs 16 1/2 ounces

1 mixed nut = 1 3/8 ounces

let the number of fruit mixed nut in the box = y

1 mixed nut = 11/8 ounces

y = 33/2 ounces

cross multiply:

$\begin{gathered} 1(\frac{33}{2})\text{ = y(}\frac{\text{11}}{8}) \\ \frac{33}{2}=\frac{11y}{8} \end{gathered}$ $\begin{gathered} 2(11y)\text{ = 33(8)} \\ 22y\text{ = 33(8)} \\ y\text{ = }\frac{33(8)}{22} \end{gathered}$ $\begin{gathered} y\text{ = 264/22} \\ y\text{ = 12 mixed nuts} \end{gathered}$

3 0

1 year ago