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Novay_Z [31]
3 years ago
15

Help! (Brainliest If You ANswer)

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
7 0

Answer:

c

Step-by-step explanation:

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Xz=58 and yz=23.1 find xy
Pachacha [2.7K]

Step-by-step explanation:

XZ = 58

YZ = 23.1

XY = XZ + YZ

XY =58 + 23.1

XY = 81 .1

4 0
2 years ago
5.Write each algebraic expression in simplest form.
Hatshy [7]

Answer:

=12x+y

Step-by-step explanation:

Combine like terms

=5x+-3y+7x+4y

=(5x+7x)+(-3y+4y)

=12x+y

7 0
3 years ago
Read 2 more answers
Simplify the following expression by combining like terms.<br> 3x + 4x² - 7x+ 9x2
EleoNora [17]

Answer:

13x² - 4x

Step-by-step explanation:

3x + 4x² - 7x + 9x² ← collect like terms

= (4x² + 9x² ) + (3x - 7x)

= 13x² + (- 4x)

= 13x² - 4x

7 0
2 years ago
10)
Naddika [18.5K]

Answer:

i

Step-by-step explanation:

5 0
3 years ago
If a cone with a diameter of 10 m has a surface area of 190.6m2, find its slant height. Round to the nearest tenth.
alukav5142 [94]

Answer:  The slant height of the cone is 65.6 m

Step-by-step explanation:

Given: The diameter of a cone = 10 m

Surface area of cone = 190.6 m²

To find: Slant height

Diameter of cone = 10 m

Therefore Radius of cone = \dfrac{\text {Diameter }}{2} = \dfrac{10}{2} =5m

As we know that surface area of a cone is given by

S.A. = \pi r(l+r)

Where S.A. is surface area , r is the radius of cone and l is the slant height of the cone.

Let Slant height = l

So we have

190.6 = \dfrac{22}{7} \times 5 ( 5+l)\\\\\Rightarrow  5+l= \dfrac{190.6 \times 7}{22}\\\\\Rightarrow l=  \dfrac{1334.2}{22}+5\approx 60.64+5 = 65.64\approx65.6

Hence the slant height of the cone is 65.6 m

5 0
3 years ago
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