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3 years ago

HELP PLEASE ASAP !!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Alik [6]3 years ago

8 0

The answer is 134cm2:)

Studentka2010 [4]3 years ago

5 0

Answer:

I think not to sure how I got the answer 134.

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The sum of two numbers is 22 their difference is 4

ipn [44]

Answer:

x=13

Step-by-step explanation:

ok so let x+y=22

--------------------------------------------------------

x and y are the 2 unkown Number

-------------------------------------------

x-y=4

their difference is 4

----------------------------------

add both equations

(x+y=22)

+(x-y=4)

------------------------------

y's cancel out

-----------------------

2x=26

-----------------

x=13

3 0

3 years ago

Read 2 more answers

(b) Her friend Hannah gets 70% of the 140 marks available in the exam.

Lisa [10]

$\huge\fbox{Answer ☘}$

number of marks available = 140

percentage secured = 70%

therefore marks secured =

$70\% \: \: of \: 140 \\\\ =>\frac{70}{100} \times 140 \\ \\ = > 98 \: marks$

hope helpful~

5 0

3 years ago

Question 1:

AnnyKZ [126]

Answer(1):

Given that h(y)=2y-7.

h(8) means plug y=8 into h(y)=2y-7.

h(8)=2*8-7=16-7=9

Hence C) 9 is the final answer.

Answer 2:

(7/8) = (m/32)

to solve for m, we begin by cross multiply

8m=7*32

8m=224

m=28

Hence choice C) 28 is final answer.

Reflection symmetry occurs when a line is drawn to divide a shape in halves so that each half is a reflection of the other.

Rotational symmetry is to check if the given picture is symmetric after some rotation.

Answer 3:

Letter "E" will have

B) the letter has reflection symmetry only

So B) is correct.

Answer 4:

Which statement is true?

Letter "Z" will have

B) the letter has rotation symmetry only

Hence B) is correct.

Answer 5:

Letter "X" will have

A) the letter has both reflection and rotation symmetry

Hence A) is correct.

5 0

4 years ago

Read 2 more answers

12-15÷ 3-3 somebody help me plsss!!

Shtirlitz [24]

Hello.

The answer is: 4

12-(15/3)-3 = 0

(1/4)*(x-8) = 2

(3*b)/5 = -2

3;4;-5;6

1;4;2;3

Have a nice day

5 0

3 years ago

Find a quadratic model for the set of values: (-2, -20), (0, -4), (4, -20). Show your work.

Ivahew [28]

Ok... so this question can be solved by using simultaneous equations.

Use the general from of a parabola

$y = ax^2 + bx + c$

you know the value of c, the y-intercept... y = -4

which means the equation is

$y = ax^2 + bx - 4$

now use the other 2 points to get 2 equations in 2 unknowns

(-2, -20) just substitute

$-20 = (-2)^2a + (-2)b - 4 ~~~or~~~ -20 = 4a - 2b - 4$

this becomes

$4a - 2b = -16$

now the other equation using (4, -20)

The simplified form is

6 0

3 years ago