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Oksana_A [137]
3 years ago
6

NEED HELP WILL MARK BRAINIEST!

Mathematics
1 answer:
Illusion [34]3 years ago
7 0

Answer:

A) 23+5=28

B) 23-5=18

i hope it helped

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I'm not understanding which statement is correct, to me they all look wrong
neonofarm [45]

Answer:

it is the third option because -3.2 is greater than -5.4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
after elsa backed muffins, her brother ate 4 of them, he ate 2/5 of all the muffins, how many muffins did elsa bake?
kondor19780726 [428]
If he ate 4 of them, but it means he ate 2/5 muffins, 
4 muffins = 2/5 muffins
You substitute x muffins for how much muffins she baked in all -
2/5* x muffins = 4
2/5 multiply by 2/5 to cross it out. Do the same to the other side. 
x= 4 *5/2
x = 10 muffins
So there were 10 muffins in all


6 0
3 years ago
Read 2 more answers
Find the Value of the letter in the following questions. Give your answers to 3 s.f.
Elis [28]

Answer:

i = 75.7°

h = 48.2°

Step-by-step explanation:

==>To find i, use the sine rule for finding angles: sin(A)/a = sin(B)/b

Where,

a = 7.2cm

sin(A) = i

b = 6.5cm

sin(B) = sin(61) = 0.8746

Thus:

sin(A)/7.2 = 0.8746/6.5

Multiply both sides by 7.2

sin(A) = (0.8746*7.2)/6.5

sin(A) = 0.969 (3 s.f)

A = i° = sin^-1(0.969) = 75.7 (3 s.f)

==>To find h, use the Cosine rule for angles:

Cos(C) = (a²+b²-c²)/2ab

cos(C) = h°, a = 4, b = 4.5, c = 3.5

a² = 16

b² = 20.25

c² = 12.25

cos(C) = (16+20.25-12.25)/(2*4*4.5)

cos(C) = 24/36

cos(C) = 0.667 (3 s.f)

C = h° = cos^-1(0.667) = 48.2° (3 s.f)

4 0
3 years ago
Tangent please help me
atroni [7]
A^2+ b^2= c^2
24^2+b^2=25^2
576+b^2=625
Sub 576
b^2= 49 b=7
6 0
3 years ago
9(k+12)+4k2 when k= 3 the 2 is small
Advocard [28]

Answer:

the answer is 4k^2+9k+108

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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