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Sphinxa [80]
3 years ago
10

1. 3x + 2 - 7y - 4z + 8

Mathematics
1 answer:
joja [24]3 years ago
5 0

Answer:

Variables- x, y and z

Constants- 2 and 8

Coefficients- 3, 7, and 4

Step-by-step explanation:

Variables - The numbers we don't know/trying to find.

Constants- The numbers that remain fixed

Coefficients- The numbers in front of the variables

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PLEASE HELP FIGURE OUT HOW TO DO THIS! THANK YOU!
S_A_V [24]
Y=16  x=20
 put these values in equation and see rifht or wrong

A) 16 ≠20*20 wrong
B) 16 ≠ (5/4)*20 - wrong
C) 16=(4/5)*20 - right
D) 16≠0.6*20
Answer: C) y=4/5*x
5 0
3 years ago
Read 2 more answers
In a certain​ chemical, the ratio of zinc to copper is 4 to 15. A jar of the chemical contains 750 of copper. How many grams of
nataly862011 [7]

Answer: it contains 200 grams of zinc.

Step-by-step explanation:

Ratio of zinc to copper is 4 to 15 = 4;15

Total ratio = 4+15= 19

We first find amount of both zinc and copper( the whole chemical)  which is equal to

ratio of copper / total ratio  x (the entire chemical--total grams of zinc and copper) =amount of copper

15/19 x X = 750

X= 750 X 19 / 15= 950 grams

To find amount of zinc in the chemical = ratio of zinc / total ratio x total amount of chemical

=4/19 x 950

=200 grams

3 0
2 years ago
Write the phrase as an expression: 5 less than 8
Helga [31]
Ok, listen up
This sign ->  "<" means less than
Therefore, the expression is 5 < 8
8 0
2 years ago
Please help<br> maths geometry
goldenfox [79]

Answer:

D₁ = 68°

Step-by-step explanation:

If AB = BE then ΔABE is an isosceles triangle, therefore A₁ = E₁.

If A₁ = 28° then E₁ = 28°.

<u>Opposite sides</u> of a parallelogram are <u>parallel</u>.

Using the Alternate Interior Angles Theorem:

A₂ = E₁ = 28°

Therefore, A = A₁ + A₂ = 28° + 28° = 56°

<u>Opposite angles</u> in a parallelogram are <u>equal</u>.

Therefore, C = A = 56°.

<u>Opposite sides</u> of a parallelogram are <u>equal in length</u>, so AB = CD.

If AB = DE = CD then ΔCDE is an isosceles triangle.

Therefore, C = E₃ = 56°.

Interior angles of a triangle sum to 180°.

⇒ D₁ + C + E₃ = 180°

⇒ D₁ + 56° + 56° = 180°

⇒ D₁ + 112° = 180°

⇒ D₁ = 180° - 112°

⇒ D₁ = 68°

6 0
1 year ago
Expand. Your answer should be a polynomial in standard form. (x – 4)(x + 7) =​
aev [14]

x^2 + 3x - 28

there u go

3 0
3 years ago
Read 2 more answers
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