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Gelneren [198K]

4 years ago

5

I don’t really understand what to do on these questions and could you tell me the ratio to solve the rest? The ratio is 10:5

2 answers:

Galina-37 [17]4 years ago

4 0

You need a picture for me to answer

jenyasd209 [6]4 years ago

4 0

Answer:

we need a page to see the questions

Step-by-step explanation:

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Can someone help me with this question please!!!!!

lianna [129]

Answer:

a = 29

u = 12

Step-by-step explanation:

32 + 7u + 9 + 2a - 3 = 3a + 7u + 9

32 + 2a - 3 = 3a

a = 29

3(29) + 7u + 9 = 180

7u = 180 - 96

7u = 84

u = 12

6 0

3 years ago

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1 − 3(3 + 6b) = −6(3b + 1) − 2 <br> will get brainliest!!!!!!!!!!!!!!!!!!!!!!!!!!!

Zarrin [17]

Answer:

=infinite

Step-by-step explanation:

7 0

3 years ago

Two numbers are in the ratio of 3 to 4.

Korvikt [17]

Answer: 18

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

if (2x minus 1) is exactly divisible by 6 X square + ax - 4 and b x square - 11x + 3, then the value of b square minus a square

alexdok [17]

Step-by-step explanation:

Given that:-

$(2x - 1)$

is exactly divisible by

$6 {x}^{2} + ax - 4$

and

$b {x}^{2} - 11x + 3$

We need to simply, place the value of x.

$2x - 1 = 0$

$2x = 1$

$x = \frac{1}{2}$

Now,

$6 {( \frac{1}{2} )}^{2} + \frac{a}{2} - 4 = 0$

$\frac{3 + a}{2} = 4$

$3 + a = 4 \times 2 = 8$

$a = 8 - 3$

$a = 5$

Now, to find b.

$b {( \frac{1}{2}) }^{2} - \frac{11}{2} + 3 = 0$

$\frac{b}{4} - \frac{11}{2} = - 3$

$\frac{b - 22}{4} = - 3$

$b - 22 = - 12$

$b = 10$

is the answer.

Now, we need

${b}^{2} - {a}^{2} + a - b$

$100 - 25 + 100 + 5$

$= 205 - 25$

$= 180$

is the answer.

Hope it helps :D

3 0

3 years ago

In triangle abc, ac=12, the measure of angle a = 30\deg, and the measure of angle b = 45\deg. find the area of this triangle.

Anuta_ua [19.1K]

First we have to find the missing angle. And we know that sum of the measurement of angles of a triangle is 180.

So we will get

$C = 180-30-45 = 105 degree$

Now we use sine law, which is

$\frac{sin \ A}{BC} = \frac{sin \ B }{AC}$

Substituting the values, we will get

$\frac{sin 30}{BC} = \frac{sin 45}{12}$

$BC = \frac{12 sin 30}{sin 45} = 6 \sqrt2$

The formula of area of triangle, for the given triangle is

$Area= \frac{1}{2}AC*BC sinC$

$Area = \frac{1}{2}*12*6 \sqrt 2 sin(105)= 49.2 \ square \ units$

6 0

3 years ago