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cricket20 [7]
3 years ago
6

Evaluate each expression (-21)+22+41

Mathematics
1 answer:
Marianna [84]3 years ago
4 0

Answer:

42

Step-by-step explanation:

Add all up

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Factorise<br><br> 3-x^2<br><br> Someone answer this question please
densk [106]

Answer:

No factors.

3 - x^2 is prime.

Step-by-step explanation:

4 0
2 years ago
This isosceles triangle has two sides of equal length , a, that are longer than the length of the base , b. The perimeter of the
Sholpan [36]
We are give the equation of the perimeter of the triangle as follows:
2a + b = 15.7 
where b represents the base.

Now, if we want to calculate the length of the base, all we have to do is isolate the b in one side of the equation as follows:
b = 15.7 - 2a

We know that a = 6.3 cm, therefore, the length of the base can be calculated as follows:
b = 15.7 - 2(6.3) = 3.1 cm
4 0
3 years ago
Complete the table with values for x or y that make this equation true: 3x+y=15
Ipatiy [6.2K]

Answer:

x=5

y=0

or

x=1

y=12

Step-by-step explanation:

I guess you can make it up as long as it equals 15, I guess that's what the question is saying??

7 0
3 years ago
I need help with surface area
patriot [66]

Answer:

Surface Area varies by object/shape.

Ask your teacher/learning helper for those formulas of surface area

Step-by-step explanation:

Surface area is the sum of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

4 0
3 years ago
PLS<br> HELP<br> ILL<br> GIVE<br> MORE<br> IF<br> ITS<br> RIGHT
NNADVOKAT [17]
3

Circumference is 2πr, and the large cake has a radius 3 times the radius of the small cake. So, the circumference of the large cake will be 3 times that of the small cake.
4 0
3 years ago
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