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3 years ago

Como acho a classe de equivalência de 5/9 e 7/13

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

4 0

A) 5/9 = 10/18

b)7/13 = 14/26

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Plz help this question is hard for me.

Burka [1]

The Answer is : r = -26

7 0

4 years ago

Read 2 more answers

Look at the image attached below.

SSSSS [86.1K]

Step-by-step explanation:

Step 1: Subtract the first part

$1\frac{1}{2} - \frac{1}{4}$

$\frac{3}{2} - \frac{1}{4}$

$\frac{6}{4}-\frac{1}{4}$

$\frac{5}{4}$

Step 2: Multiply both to get how much the brother drank

$\frac{5}{4} * \frac{2}{5}$

$\frac{2}{4}$

$\frac{1}{2} \ L$

Answer: 1/2 Liters

4 0

3 years ago

Read 2 more answers

How do I solve for c and d

tankabanditka [31]

For c using proportionality of corresponding sides you can writing

(3c+4) 9
--------- = -------
20 15

(3c+4) 3
---------- = ------ cross multiple
20 5

5(3c+4) = 20*3 divide both sides by 5

3c+4=4*3

3c+4=12

3c = 8

c = 8/3

for d you can writing

(2d-3) 9
--------- = ------
12 15

(2d-3) 3
--------- = ------- cross multiple
12 5

5(2d-3) = 12*3

10d -15 = 36

10d = 51

d = 51/10

d = 5,1

hope helped

6 0

3 years ago

For the function f(x)=3xsquared- 2x+5 find f(1) f(-2) and f(a)

Oksanka [162]

$f(x)=3x^2-2x+5\\\\
f(1):\ \ Substitude\ 1 \ as\ x\ into\ function:\\
f(1)=3*1^2-2*1+5=3-2+5=\textbf{6}\\\\
f(-2)\ \ Substitude\ x=-2\\
f(-2)=3*(-2)^2-2*(-2)+5=3*4+4+5=12+4+5=\textbf{21}\\\\
f(a)\ \ substitude\ x=a\\
f(a)=\underline{3a^2-2a+5}$

4 0

4 years ago

I need the answer pls

AleksAgata [21]

the answer is 32.........

8 0

3 years ago