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IrinaVladis [17]
3 years ago
13

Pleasee help me, it says evaluate the numerical expressions. decide whether they are equivalent, what’s the value of 84 - 14

Mathematics
1 answer:
Rainbow [258]3 years ago
3 0
Boi are you asking what’s 84-14??

It’s 74

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A knife is three times the cost of a spoon.
ivanzaharov [21]

Answer:

cost of knife = £5.52

Step-by-step explanation:

Assume:

Cost of Knife = a

Cost of Spoon = b

a = 3b   ----------------------(1)

12a + 9b = £82.80 -------(2)

Substitute equation (1) in equation (2)

12 * (3b) + 9b = £82.80

36b + 9b = £82.80

45b = £82.80

b = £1.84

Therefore, cost of knife = a = 3 * £1.84 = £5.52

7 0
4 years ago
Find the volume of a right circular cone that has a height of 11.1 in and a base with a circumference of 17.6 in. Round your ans
Mademuasel [1]

Answer:91.1

Step-by-step explanation:

Circumference=17.6

2xπxr=17.6

2x3.14xr=17.6

6.28r=17.6

r=17.6 ➗ 6.28

r=2.8

volume of cone=(πxr^2xh) ➗ 3

Volume=(3.14x(2.8)^2x11.1) ➗ 3

Volume=(3.14x2.8x2.8x11.1) ➗ 3

Volume=273.3 ➗ 3

Volume=91.1

6 0
3 years ago
Solve this system of equations by using the elimination method -2x-2y=-6, 3x+4y=8
adoni [48]

Step-by-step explanation:

- 2x-2y=-6

3x+4y=8

multiply equation (1) by 3 and equation (2) by 2

- 6x-6y=18

6x+8y=16

Add

2y=34

y= 34÷2

y=17

substitute 17 for y in equation (2)

3x+4y=8

3x+4(17)=8

3x+68=8

3x=8-68

3x=-60

x=-60÷3

x=-20

x=-20,y=17

8 0
3 years ago
In the figure,kj and kl are opposite rays.1=2 and km bisects nkl
Bess [88]

the picture in the attached figure


we know that

m∠1+m∠2+m∠3+m∠4=180°

m∠jkm=m∠1+m∠2+m∠3

so

m∠jkm+∠4=180°

m∠jkm=5x+18

∠4=x

substitute

(5x+18)+x=180°------> 6x=180-18------> x=162/6--------> x=27°


therefore


the answer is

the measure of angle 4 is equal to 27 degrees

6 0
3 years ago
Read 2 more answers
Which answer matches this description?
lara31 [8.8K]
None of these really fit….. it would be
45/(6+3)
But none of your answers match so I’m not sure,,,,, sorry
5 0
3 years ago
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