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s2008m [1.1K]
3 years ago
15

I need help with my assignment, does anyone know the answer to this?

Mathematics
2 answers:
vampirchik [111]3 years ago
4 0

Answer:

What times 7 divided by three gets you 52.5. That's what you need to ask yourself. The formula is B×H÷3.

Hope this helps

Step-by-step explanation:

Fittoniya [83]3 years ago
3 0

Answer:

The base length of the triangle is 15 units

Step-by-step explanation:

The area of a triangle is given by the formula; 1/2 *base* perpendicular height. In the presented scenario, we can determine the base by solving for base in the given equation; 1/2 *base*7 =52.5. Multiply both sides by 2 yields; base*7 =105. Dividing by 7 yields; base=15 units

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Can you help me with 1 & 3?
iVinArrow [24]
For 1 multiply both sides by 3 which gives you 3y-y=12. Then combine like terms 2y=12. Lastly divide both sides by 2 and you get y=6. And for 3 first multiply both sides by 4 which gives you 6y-32=y+8. After that combine like terms 6y-y-32=8. Now add the equation together 5y=40 and then divide by 5 and get y=8
5 0
3 years ago
Which equation has the same solutions as 2x^2+6x-10=0
lisov135 [29]

Answer:

x^2+3x-5=0

Step-by-step explanation:

Divide the whole equation by 2

8 0
3 years ago
The ratio of the geometric mean and arithmetic mean of two numbers is 3:5, find the ratio of the smaller number to the larger nu
IgorC [24]

Answer:

\frac{1}{9}

Step-by-step explanation:

Let the numbers be x,y, where x>y

The geometric mean is

\sqrt{xy}

The Arithmetic mean is

\frac{x + y}{2}

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5.

\frac{ \sqrt{xy} }{ \frac{x + y}{2} }  =  \frac{3}{5}

We can write the equation;

\sqrt{xy}  = 3

or

xy = 9 -  -  - (2)

l

and

\frac{x + y}{2}  = 5

or

x + y = 10 -  -  - (2)

Make y the subject in equation 2

y = 10 - x -  -  - (3)

Put equation 3 in 1

x(10 - x) = 9

10x -  {x}^{2}  = 9

{x}^{2}  - 10x + 9 = 0

(x - 9)(x - 1) = 0

x =1  \: or \: 9

When x=1, y=10-1=9

When x=9, y=10-9=1

Therefore x=9, and y=1

The ratio of the smaller number to the larger number is

\frac{1}{9}

3 0
3 years ago
Add: -5g^2+(-9g^2-8)
Amiraneli [1.4K]

Answer:

\boxed{-14g^2 - 8}

Step-by-step explanation:

-5g^2 + (-9g^2 - 8)

= - 5g^2 - 9g^2 - 8

= -14g^2 - 8

3 0
3 years ago
I need help with 18-19​
Svet_ta [14]

Answer:

18-19= -1  

Step-by-step explanation:

18-19=-1

Sweetheart, you cant subtract a smaller number from an bigger number or it will be a negitive number so the answer is -1

8 0
2 years ago
Read 2 more answers
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