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andrew-mc [135]
2 years ago
8

Please help me please​

Mathematics
2 answers:
Vesnalui [34]2 years ago
4 0
X=7. 42/14=3. so x+5 times 3 = 7x-13. do the math, x =7. 7+5=12. 7(7)-13= 36. 12x3=36. boom.
elena-s [515]2 years ago
3 0

Answer:

Step-by-step explanation:

Since they are similar we can say

(7x-13)/42=(x+5)/14 upon cross multiplication we have

14(7x-13)=42(x+5) divide each side by 14

7x-13=3(x+5) expanding right side

7x-13=3x+15 adding 13 to each side

7x=3x+28 subtracting 3x from each side

4x=28 dividing each side by 4

x=7

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What do you get when using the Quadratic formula for the equation x^2+4=20?
wolverine [178]
x^{2} +4=20
x^{2} =20-4
x^{2} =16
x= \sqrt{16}
x=4
4 0
3 years ago
BRAINLIEST <br> Solve for X. Round to the nearest tenth.
Schach [20]

Answer:

a=180-(45+37)

b=180-(9+24)

c=180-(42+64)

d=180-(70+13)

7 0
2 years ago
Read 2 more answers
If f(x) = 5x + 3x² - 7x
Novay_Z [31]

Answer:

the answer is going to be A. -6x - 14 x+ 6

4 0
3 years ago
Eli is following this recipe to bake bread rolls. He uses 600ml of water. How much of the others ingredients does he use? 600g f
RoseWind [281]

Answer:

720 grams of flour.

10.8 grams of salt.

14.4 grams of yeast

36 ml of oil.

Step-by-step explanation:

The recipe is:

600g flour

9g salt

12g yeast

30ml oil

500ml water

Now we use 600ml of water.

We can take the quotient between the amount of water we use and the amount of water in the recipe, this is:

600ml/500ml = 1.2

Then the ratio between the quantities we need to use and the quantities un the recipe should be always 1.2

Or the quantities that Eli needs to use will be 1.2 times the ones shown in the recipe.

Then she needs to use:

1.2*600g flour = 720 grams of flour.

1.2*9g salt = 10.8 grams of salt.

1.2*12g yeast = 14.4 grams of yeast

1.2*30ml oil = 36 ml of oil.

7 0
3 years ago
If the term of arthematic progression decrease in magnitude then common difference must be
Tpy6a [65]

We can say that if the term of arithmetic progression decrease in magnitude then the common difference must be <u>negative</u>.

An arithmetic progression is a sequence where every term is a sum of the previous term and a common difference.

If we suppose the first term of an arithmetic progression to be a, and the common difference to be d, then the arithmetic progression goes like this:

The first term, a₁ = a,

Second term, a₂ = a₁ + d = a + d,

Third term, a₃ = a₂ + d = a + 2d,

Fourth term, a₄ = a₃ + d = a + 3d, and it goes so on up to,

The n-th term, aₙ = aₙ₋₁ + d = a + (n - 1)d.

In the question, we are asked if the term of arithmetic progression decrease in magnitude then what can we say about the common difference.

As the magnitude of the term decreases, we can show that as:

The n-th term < The first term,

or, aₙ < a₁,

or, a + (n - 1)d < a,

or, a + (n - 1)d - a < a - a {Subtracting a from both sides},

or, (n - 1)d < 0.

Since, n > 1, (n - 1) > 0, thus we get the common difference, d < 0, that is, the common difference is negative.

Thus, we can say that if the term of arithmetic progression decrease in magnitude then the common difference must be <u>negative</u>.

Learn more about arithmetic progressions at

brainly.com/question/6561461

#SPJ4

8 0
2 years ago
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