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3 years ago

How to do fractions Equations multiplication and division

Mathematics

2 answers:

anygoal [31]3 years ago

6 0

Add subtraction multiplication and division

makkiz [27]3 years ago

4 0

If you want to multiply fractions just multiply across for example 1/2 times 1/2
1x1=1
2x2= 4
The answer would be 1/4
For division it’s very similar
For example 1/1 divided by 1/2
Switch the sign divide by x
1/1 x 1/2
Then switch the second numbers numerator and denominator
1/1 x 2/1
=2/1

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One positive integer is 3 less than twice another. the sum of their squares is 233. find the integers.

lana66690 [7]

Let the two integers be x and y
x-3= 2y
x=2y+3______(1)

x²+y²= 233_____(2)
sub eqn (1) into (2)
{2y+3}²+y²=233
4y² + 12y +9 +y²=233
5y²+12y+9-233=0
5y²+12y-224=0
y= -8 or 5.6
recall they are positive integers so y=5.6
now sub y=5.6 into eqn (1)
x=2(5.6)+3 = 11.2+3=14.2

the two integers are 14.2 and 5.6

4 0

4 years ago

Find each measurement indicated. Round your answers to the nearest tenth. Please show your work. Part 2

uysha [10]

Answer:

4. 14.03 miles

5. 15.02 kilometers

6. 19.95 meters

Step-by-step explanation:

4. We need to use the law of sines, which states that for a triangle with angles A, B, and C and sides a, b, and c, respectively, then:

$\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

Here, a = 30, <A = 130, and <B = 21. So, let's plug these in:

$\frac{30}{sin130} =\frac{b}{sin21}$

b = AC = $\frac{30}{sin130}*{sin21}$ ≈ 14.03 miles

5. Here, c = 7, <C = 23, and <A = 123. We want to find BC, which is just a:

$\frac{7}{sin23} =\frac{a}{sin123}$

a = BC = $\frac{7}{sin23} *{sin123}$ ≈ 15.02 kilometers

6. Here, c = 22, <C = 88, and <B = 65. We want to find AC, which is just b:

$\frac{22}{sin88} =\frac{b}{sin65}$

b = AC = $\frac{22}{sin88} *{sin65}$ ≈ 19.95 meters

Hope this helps!

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-5x - 4=46<br><br> two step equations

Anastaziya [24]

-5x-4=46
-5x=46+4
-5x=50
÷both sides by -5x.
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