MATHEMATICS MIDDLE SCHOOL

A quadrilateral has angle measures of 102°, 84°, and 77°. What is the measure of the fourth angle?

Answers

Answer 1
Answer:

Answer:

Measure of the 4th angle = 360-(102+84+77)

= 360-263

= 97°

Hope this helps!

Related Questions

Bob has $150 in his savings account and saves $40 a month. Andrea has only $100 in her account but saves at a rate of $50 a month. When will Andrea have saved more than Bob?
What is scale factor?
Cual es la. Longitud de un lápiz 2
Which 2 square numbers make a difference of 51
Corey bought a container shaped like a rectangular prism to hold his photo collection. If the container has a volume of 480 cubic inches, which of the following could be its dimensions in inches .

I need help with 6-8

Answers

Answer:

6. y² = 169x

7. y² = 12x

8. y^(2) = (1)/(2)x

Step-by-step explanation:

The equation of a quadratic function in vertex form is given by  

(y - α)² = 4a(x - β)

Where, (α,β) is the vertex of the function and a is the distance from vertex to its focus.

6. Here, (α,β) ≡ (0,0) and a point on the equation is (1,13)

So, the equation will be y² = 4ax

⇒ 13² = 4a(1)  

⇒ 4a = 169

Therefore, the original equation will be y² = 169x  (Answer)

7. Here also the vertex is (0,0) and a point on the equation is (3,-6),

So, (-6)² = 4a(3)  

⇒ 4a = 12

So, the equation is y² = 12x (Answer)

8. Here also the vertex is (0,0) and a point on the equation is ((1)/(2),(1)/(2)),

So, ((1)/(2))^(2) = 4a((1)/(2))

⇒ 4a = (1)/(2)

So, the equation is y^(2) = (1)/(2)x (Answer)

-r + 6 +8r -14
Simplify the expressions by combining like terms?

Answers


                                 -r  +  6  +  8r  -  14

Add up all the 'r's:    -r + 8r  =  7r

Add up all of the
just-plain-numbers:      + 6 - 14  =   - 8

The whole messy complicated expression is the same as        7r - 8      .

Which expression below is equivalent to 6/5x+ 6 and 3/5?a. 6/5(x+3)
b. 3/5(2x+11)
c. 3/5(2x+6)
d. 2/5(3x+5)

Answers

B. (3)/(5)(2x+11)
distribute (3)/(5) to the numerals in the parenthesis
=(6x)/(5)+(33)/(5)
=(6x)/(5) + 6 (3)/(5)

5. Find the value of x. Any help is appreciated. Thanks! ^-^

Answers

The right answer for the question that is being asked and shown above is that:

This can be answered using the Pythagorean Theorem.
h2 = a2 + b2
h = square root (10^2 + 7^2)
h = square root (100 + 49)
h = square root (149) cm

So the correct answer is h = square root (149) cm

100 is 25% of what number?

Answers

400

100 divided by .25 equals 400
think of 25% of 100 which is 400, so 100 x 4 =400
Hope this helps
100 is 25% of 400
You could just divide 400 by .25 which you get 400 and to check your answer, you could multiply 100x4 which equals 400

Plzzzzzzzzzz helpToni measured the height of her bedroom doorway with a measuring tape. She measured the height as 171 cm. The doorway’s actual height is 182.8 cm.

What is the percent error in Toni’s measurement? Round to the nearest tenth of a percent, if necessary.

A.
0.12%

B.
6.5%

C.
6.9%

D.
11.8%

Answers


-- The height of the doorway is really  182.8 cm.

-- Tamara measured  171 cm.

-- That was not exactly right. 
    She was off by  (182.8 - 171) =  11.8 cm .

-- Compared to the real true number,
    the error was
                           (11.8 / 182.8) = 0.0646 of it .

-- To change a decimal to percent,
   move the decimal point two places that way ==> .

                  0.0646  =  6.46%

   Rounded to the nearest tenth of a percent,

                                   6.46%  ==>  6.5% .

Her error should really be called  -6.5% , because
her measurement was too low.
Other Questions
Can anyone help me? I don't understand this. can u also give the calculations please??
4x-2=90 wha is the answer to this problem?
give 2 examples that show how using parentheses can change the order in which operations are performed in an expression
-10.216 + C Equals 12.014   What is CConfused