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3 years ago

Can you explain how to work 7x+3x+5

Mathematics

1 answer:

Vsevolod [243]3 years ago

5 0

Answer:

the answer is 21x+5

Step-by-step explanation:

because there are 2 x and if you multiply 7x and 3x it will be 21 than you put the x, so 21x And then add the +5 so it Will be 21x+5

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A line passes through (5,3) with a slope of 3/5. Plot 3 points on this line

Aneli [31]

Answer:

y=3/5*x, A(0,0), B(1,3/5), C(2,6/5)

Step-by-step explanation:

A(5,3)=(x1,y1)....x1=5, y1=3

m=3/5

y-y1=m(x-x1)

y-3=3/5(x-5)

y-3=3/5*x-3/5*5

y-3=3/5*x - 3

y=3/5*x-3+3

y=3/5*x

x=0, y=3/5*x, y=3/5*0=0 A(0,0)

x=1, y=3/5*1=3/5 B(1,3/5)

x=2, y=3/5*2=6/5 C(2,6/5)

3 0

3 years ago

Two kinds of fish can be found in a small tank that is 5 feet long. A

Lina20 [59]

Answer:

Step-by-step explanation:

It is longer by = 2 2/15 - 1 7/10

= 32/15 - 17/10

= (64 - 51)/30

= 13/30 foot

5 0

3 years ago

Find the height and area of the equilateral triangle

sergejj [24]

As here we are given with an equilateral triangle, whose side is 3 cm, and we need to find the height and area of the equilateral triangle. So, for this let's recall that, the area of any equilateral triangle with side a is given by ;

${\boxed{\bf{Area_{(Equilateral\:\: Triangle)}=\dfrac{\sqrt{3}}{4}a^{2}}}}$

So, if we substitute a = 3, in our Formula, it will yield to

${:\implies \quad \sf Area_{(Equilateral\:\:Triangle)}=\dfrac{\sqrt{3}}{4}(3)^{2}}$

${:\implies \quad \sf Area_{(Equilateral\:\:Triangle)}=\dfrac{\sqrt{3}}{4}(9)}$

${:\implies \quad \boxed{\bf{Area_{(Equilateral\:\:Triangle)}=\dfrac{9\sqrt{3}}{4}\:\:cm^{2}}}}$

Now, as we know that, for any triangle we also have a formula that is ;

${\boxed{\bf{Area_{(Triangle)}=\dfrac{1}{2}\times Base\times Height}}}$

Now, Here as the triangle is equilateral, so it's base will just be same 3, and if we let height be H, so we will be having

${:\implies \quad \sf \dfrac{1}{2}\times 3\times H=\dfrac{9\sqrt{3}}{4}}$

${:\implies \quad \sf H=\dfrac{9\sqrt{3}}{4}\times \dfrac23}$

${:\implies \quad \boxed{\bf{Height=\dfrac{3\sqrt{3}}{2}\:\:cm}}}$

3 0

2 years ago

Hot dogs come in packages of 6. Hot dog buns come in packages of 8. Antonio will buy the same number of hot dogs as hot dog buns

Eddi Din [679]

He will buy 24 hot dogs

3 0

3 years ago

Read 2 more answers

Algebra (attached file)<br><br> How do I do this?

IgorLugansk [536]

It's J. Honestly I just picked a number for X and a number for C and solved it using each answer. J works.

8 0

3 years ago