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4 years ago

What is the mass of an atom that has 7 protons, 7 neutrons, and 7 electrons

Mathematics

1 answer:

viva [34]4 years ago

3 0

Answer:

Nitrogen has an atomic number of 7 (Z=7) because it has 7 protons in its nucleus.

I think that's what you're looking for

?? I can always be wrong.

Good luck, hope this helped!

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Jared made 12 3/4 cups of snack mix for a party.His guests eat 2/3 of the mix.How manysnack mix did his guest eat?

Fantom [35]

Answer:

<h3>The number of snacks did Jared's guest eat is $12\frac{1}{12}$ </h3>

Step-by-step explanation:

Given that Jared made $12\frac{3}{4}$ cups of snack mix for a party.

Let x be the cups of snacks mix made by Jared.

Therefore $x=12\frac{3}{4}$

His guests eat $\frac{2}{3}$ of the mix.

Let y be the guest eated snacks mix

Therefore $y=\frac{2}{3}$

<h3>To find how many snack mix did his guest eat :</h3>

Let z be the number of snacks did Jared's guest eat

Therefore z=x-y

$z=12\frac{3}{4}-\frac{2}{3}$

$=\frac{51}{4}-\frac{2}{3}$

$=\frac{51(3)-2(4)}{4\times 3}$

$=\frac{153-8}{12}$

$=\frac{145}{12}$

$=12\frac{1}{12}$

Therefore $z=12\frac{1}{12}$

<h3>Therefore the number of snacks did Jared's guest eat is $12\frac{1}{12}$ </h3>

5 0

4 years ago

Ashley works in accountant’s office and makes $45 per hour. She must pay $40 for daycare each day. If she wants to make more tha

Neporo4naja [7]

Answer:

The answer is "8 hours"

Step-by-step explanation:

by the given value we create the equation that is:

$\to 45x-40=300\\\\\to 45x=300+40\\\\\to 45x=340\\\\\to x=\frac{340}{45}\\\\\to x= 7.55\ \ hours \ or \ \ \ 8 \ hours$

8 0

3 years ago

The lateral area of a regular pyramid with an octagonal base is 109.9 cm2. If the slant height is 6.7 cm, find the length of one

irga5000 [103]

Given pyramid with octagonal base. Image of the pyramid attached below:

We know the formula of Lateral Area of pyramid = $\frac{1}{2} pl$

where p represent the perimeter of the octagonal base

and l represent the slant height of the pyramid.

109.9 = $\frac{1}{2}*p*6.7$

Solve for p

p = 32.81 cm

Perimeter of octagonal base (all sides are same) = 8*s

where s represent the side of octagon

8s = 32.81

Solve for s

s = 4.1 cm

Side of the octagon = 4.1cm (option D)

3 0

3 years ago

Help me pretty please. with 11th grade math

vagabundo [1.1K]

Answer:

180 the answer. English is a West Germanic language first spoken in early medieval England which eventually became the leading language of international discourse in today's world.

4 0

3 years ago

What is 12(x+9)=-108

valkas [14]

Answer is Provided in the image attached.

6 0

3 years ago

Read 2 more answers