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frez [133]
3 years ago
5

Evaluate the following expression when x = 3 and y = 4:

Mathematics
1 answer:
SpyIntel [72]3 years ago
4 0
Not 100% sure but I think that it is 14.6
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How do I solve this equation? <br> (3a)/(2a+1)-(4)/(2a-1)=1
Gnoma [55]
now solve the quadretic eq. for the value of a
I hope it help to u

4 0
4 years ago
Find the ratio of the area of triangle XBY to the area of triangle ABC for the given measurements, if BY = 3, YC = 2
Mazyrski [523]

Answer:

The ratio of the area of triangle XBY to the area of triangle ABC is \frac{9}{25}

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor and the ratio of its areas is equal to the scale factor squared

In this problem

Triangles XBY and ABC are similar, because the corresponding internal angles are congruent

see the attached figure to better understand the problem

step 1

Find the scale factor

Let

z-------> the scale factor

z=\frac{BY}{BC}

we have

BY=3\ units

BC=2+3=5\ units

substitute

z=\frac{3}{5}

step 2

Find the ratio of the area of triangle XBY to the area of triangle ABC

Remember that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

we have

z=\frac{3}{5} -----> scale factor

so

z^{2} =(\frac{3}{5})^{2} =\frac{9}{25}


5 0
3 years ago
Read 2 more answers
Are the expressions -5 + -2 and -5 -2 equivalent
arsen [322]

Answer:

no

Step-by-step explanation:

5 0
4 years ago
Please help I’m soo confused and I need to get pass this lesson
Doss [256]

Answer: 30 square inches.


Step-by-step explanation: Take the equation, V=(1/3)AH

For V=Volume, A=Area of base, and H=equals the height of the triangular pyramid.

We know the area of the base is 9, and the height is 10. So, multiply 10x9. You get 90.

Now, to get the v, you divide 90 by 3 to get 30. V=30.

7 0
3 years ago
At the malt shop a large chocolate shake takes 8/9 of a pint of milk. If the medium shake takes 1/7 the amount of a large, how m
Naddik [55]
8/9 + 1/7= 56/63 + 9/63= 56+9= 65/63 = 1  2/63     
it equals 1 and 2 over 63
8 0
3 years ago
Read 2 more answers
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