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Yuki888 [10]
3 years ago
13

Vhat is the solution to the following system? 3x+10y- 12z = 40 X-5y = 0 X-4z = 0

Mathematics
1 answer:
Nitella [24]3 years ago
3 0

Answer:x=20

y=4

z=5

Step-by-step explanation:the third equaiton times by 3 ,so we can get 3x-12=0

and along with the first equation we can get y=4

and the second equation x=20

the third equation z=5

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What is -5 to the 4 power in expanded form
Kruka [31]
-5 to the 4th power in expanded form would be -5 x -5 x -5 x -5.  This is equal to positive 625.
8 0
3 years ago
Read 2 more answers
I need help with this last question.
blondinia [14]

Answer:

Step-by-step explanation:

length=1 m

base of triangle=10 m

height=5m

volume= 1/2×10×5×1=25 m cube.

slant height l=√(5²+5²)=√50=5√2

slant surface area=2[5√2×1]=10√2

area of front and back=2×1/2(10×5)=50

total surface area=50+10√2≈50+14.14≈64.14 m²

8 0
3 years ago
Which division sentence is related to the product of a/3 (a/3) when A is not equal to 0?
Anon25 [30]

Answer:

Option 4.

Step-by-step explanation:

Reciprocal of the second fraction turns the product into the division of the two fractions, which equals to 1.

a/3(a/3)

a/3 \div 3/a=1

Two fractions are said to be the reciprocal or multiplicative inverse of each other, if their product is 1.

3 0
3 years ago
tell whether the angles are adjacent or vertical then find the value of x. can someone help me please i need all the answers
dmitriy555 [2]

Answer:

3. adjacent; 49
4. adjacent; 71

5. verticle; 41

6. adjacent; 14

Step-by-step explanation:

ok basically if the angles are next to each other, then they're adjacent and if they're across from eachother they're verticle.

to find 3:

set both equations equal to each other and solve because verticle angles are equal

to find 4:

add the 2 equations together and set it equal to 180 because adjacent angles add up to equal either a complementary angle or supplementary depending on the problem

6 0
2 years ago
The perimeter of a rectangle is 32cm, its length is more than its width by 2 what's the area​
White raven [17]

Answer:

63 cm^2

Step-by-step explanation:

p = l + w + l + w

32 = 2l + 2w

32 = 2(w + 2) + 2w

32 = 2w + 4 + 2w

32 = 4w + 4

28 = 4w

7 = w

l = w + 2

l = 7 + 2

l = 9

Check your work:

32 = 9 + 7 + 9 + 7

32 = 32

Correct

A = l × w

A = 9 × 7

A = 63

3 0
3 years ago
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