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3 years ago

PLEASE HELP QUICKLY!! 7th grade math!

Mathematics

2 answers:

Serga [27]3 years ago

7 0

Answer:

I am actaully learning this right now!

Step-by-step explanation: Hope this helps!

1) Multiply the numerators.

Multiply the Denominators

Simplify

2) When working with whole numbers you have to make it improper.

Multiply the denominator by the whole number and whatever you get you to add the numerator with it and that is how you make it improper.

balu736 [363]3 years ago

4 0

Answer:

19 and 29/32 or 19.90625

Step-by-step explanation:

So the 1st Way: We could simplify it and make them into improper fraction in a way like this:

13/4 * 49/8

We can then just multiply the top row and the bottom row:

13 * 49 = 637

4 * 8 = 32

637/32 = 19 and 29/32

The 2nd Way: We could literally add 6 and 1/8, 3.25 times

(I'm so sorry this is a way lol but I couldn't think of another)

6.125 + 6.125 + 6.125 + 6.125(0.25) = 18.375 + 1.53125 = 19.90625 :P

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I don’t quite understand what to do or how to solve it. Can someone explain please ?

Bess [88]

Answer:

True.

Step-by-step explanation:

Remember the vertical line test. Anywhere on that graph, you can draw a vertical line, and it will not touch the function two times. Because of this, it is true.

4 0

4 years ago

Es urgente ¡¡¡ si la MH de a y 4 es 6 y la MH de 8 y b es 12 calcula la MH de a y b

TiliK225 [7]

Answer:

Sabemos que:

$MH(x, y) = \frac{2xy}{x+y}$

y tenemos que:

$MH (a,4) = \frac{2*a*4}{a+4} = \frac{8*a}{a+4} = 6$

Con esto podemos encontrar el valor de a:

8*a/(a+ 4) = 6

8*a = 6*(a + 4) = 6*a + 24

8a - 6a = 24

2a = 24

a = 24/2 = 12.

Tambien sabemos que:

$MH(8,b) = \frac{2*8*b}{8+b} =\frac{16*b}{8+b} = 12$

Y de ahí podemos despejar b:

(16*b)/(b + 8) = 12

16*b = 12*(b + 8) = 12b + 96

16b - 12b = 96

4b = 96

b = 96/4 = 24

Entonces tenemos a = 12 y b = 24, y el MH de a y b es:

MH(12,24) = 2*12*24/(12 + 24) = 24*24/36 = 16

7 0

3 years ago

Does someone know the answer

BlackZzzverrR [31]

The answer to your question is c

6 0

3 years ago

Please answer!!!!<br> Express (x + 9)2 as a trinomial in standard form.

Ghella [55]

Answer:

x² +18x +81

Step-by-step explanation:

(a+b)²=a²+b²+2ab

(x+9)² = x²+9²+2*x*9= x² +18x +81

4 0

3 years ago

In the figure, AB || CD. If m<1=70° and m<2 = 45°, find the m<3

docker41 [41]

Answer:65 degrees

Step-by-step explanation: a triangle has 180 degrees.

one angle is 45 degrees and the other is 70

if we add them together we get 115

180-115 is 65

m3 is 65 degrees

8 0

3 years ago