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3 years ago

8/3+(-9/4)=? ......................

Mathematics

2 answers:

Zigmanuir [339]3 years ago

4 0

Answer:

5/12

Step-by-step explanation:

make common denominater which is twelve 8 becomes 24 -9 becomes -21

devlian [24]3 years ago

4 0

Answer:

5/12

because we first need to find the equal denominator

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Christine took 3 tests and had an average of 76. She has one more test to take and she wants an average of 80. What is the lowes

amm1812

Answer: She has to score a minimum of 92 marks to take her average to 80

Step-by-step explanation:

Let the equation be

Three months total = 76 x 3 = 228

(x + 228) / 4 = 80

x + 228 = 80 x 4

x = 320 - 228

x = 92

6 0

3 years ago

What is the perimeter, in centimeters, of Trian

inessss [21]

For the given right triangle, the perimeter is 60cm, so the correct option is D.

<h3></h3><h3>How to get the perimeter of the triangle?</h3>

We can see a right triangle, by using the Pythagorean theorem we can get the missing cathetus:

$a^2 + (20cm)^2 = (25cm)^2$

$a = \sqrt{(25cm)^2 - (20cm)^2} = 15cm$

Now we know the measure of the 3 sides, then the perimeter of the given triangle is:

P = 15cm + 20cm + 25cm = 60cm

The perimeter of the triangle is 60cm.

If you want to learn more about right triangles:

brainly.com/question/2217700

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6 0

2 years ago

What is 5.6666 as a fraction

dalvyx [7]

Answer : 56666/10000

Step-by-step

5.6666 = 5.6666/1 = 56.666/10 = 566.66/100 = 5666.6/1000 = 56666/10000

7 0

3 years ago

Which of the following represents the factorization of the trinomial below?<br>x2 - 6x +9

valentinak56 [21]

For this case we must factor the following expression:

$x ^ 2-6x + 9$

We must find two numbers that, when multiplied, result in 9 and when added, result in -6.

These numbers are -3 and -3.

$-3-3 = -6\\-3 * -3 = + 9$

Then, the factored expression is of the form:

$(x-3) (x-3) = (x-3) ^ 2$

Thus, the correct option is option C.

ANswer:

Option C

3 0

3 years ago

Find the measure of the numbered angles in rhombus ABCD

sasho [114]

Answer:

see the explanation

Step-by-step explanation:

we know that

In a Rhombus opposite angles are congruent and consecutive angles are supplementary

The diagonals are perpendicular and bisect the angles

step 1

Find the measure of angle 4

we know that

$m\angle 4=27^o$ --->by the diagonals bisect the angles

step 2

Find the measure of angle 1

we know that

$m\angle 1=27^o$ ----> by opposite angles are congruent

step 3

Find the measure of angle 2

we know that

$m\angle 1=m\angle 2$ ----> by the diagonals bisect the angles

$m\angle 2=27^o$

step 4

Find the measure of angle 3

we know that

$m\angle 3=90^o$ ----> by the diagonals are perpendicular

step 5

Find the measure of angle 5

we know that

$m\angle 5+27^o=90^o$ ----> by complementary angles

$m\angle 5=90^o-27^o=63^o$

step 6

Find the measure of angle 6

we know that

$m\angle 6=m\angle 5$ ----> by the diagonals bisect the angles

$m\angle 6=63^o$

3 0

3 years ago