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3 years ago

Y=1−2x;x=9 can you please help

Mathematics

2 answers:

olchik [2.2K]3 years ago

8 0

Y = 1 - 2x
y = 1 - 2(9)
y = 1 - 18
y = -17

The answer is -17

Anit [1.1K]3 years ago

7 0

Answer:

Step-by-step explanation:

since you are given that x is 9 all you have to do is plug it in. So 1-2(9) 2 times 9 is 18 so 1-18=17

You might be interested in

If AC is parallel to DE, find X

UNO [17]

Answer: x = 50

Concept:

Here, we need to know the idea of alternative interior angles and the angle sum theorem.

Alternative interior angles are angles that are formed inside the two parallel lines, and the values are equal.

The angle sum theorem implies that the sum of interior angles of a triangle is 180°

If you are still confused, please refer to the attachment below or let me know.

Step-by-step explanation:

Given information:

AC ║ DE

∠ABC = 85°

∠A = 135°

Find the value of ∠BAC

∠A + ∠BAC = 180° (Supplementary angle)

(135°) + ∠BAC = 180°

∠BAC = 45°

Find the value of ∠BCA

∠ABC + ∠BAC + ∠BCA = 180° (Angle sum theorem)

(85°) + (45°) + ∠BCA = 180°

∠BCA = 50°

Find the value of x (∠EBC)

∠EBC ≅ ∠BCA (Alternative interior angles)

Since, ∠BCA = 50°

Therefore, ∠EBC = 50°

$\Large\boxed{x=50}$

Hope this helps!! :)

Please let me know if you have any questions

8 0

2 years ago

Please help me

antiseptic1488 [7]

The equation for the total number of paintings she sold to earn $1390.72 is:

$1390.72 = 328(1 + 0.06)x$ , option A.

-----------------

Tara sells her paintings for $328 each, and a 6% sales tax is added. Thus, her earnings for selling x paintings are of:

$E(x) = 328(1 + 0.06)x$

Her earnings are of $1390.72, thus, the equation is:

$1390.72 = 328(1 + 0.06)x$

Which is given by option A.

A similar problem is given at brainly.com/question/23365994

6 0

2 years ago

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases

erica [24]

Answer:

The product of two numbers changes by 2% when the first number increases by 70%, while the second number decreases by 40%.

Step-by-step explanation:

Let first number be x and second number be y .

Then product of x and y = xy ......(1)

Given the first number increases by 70%, while the second number decreases by 40% this means,

x is increased by 70% that is

increased value of x = x + 0.7(x) = 1.7 x

Similarly y is decreases by 40% that is

decreased value of y = y - 0.4(y) = 0.6y

New product will be = (increased value of x )( decreased value of y)

= (1.7x)(0.6y)

=1.02xy

Changed Percentage = $\dfrac{\text{new value - original value}}{{\text{original value}}}\times 100$

Substitute the values, we get,

Changed Percentage = $\frac{1.02xy-xy}{xy}\times 100$

Changed Percentage = $\frac{0.02xy}{xy}\times 100$

Changed Percentage = $0.02\times 100$

Changed Percentage = $2\%$

Thus, the product of two numbers changes by 2% when the first number increases by 70%, while the second number decreases by 40%.

5 0

4 years ago

Evaluate the expression when m=7. 2 m+7 whats the answer giving brainliest

Nikolay [14]

Answer:

Step-by-step explanation:

when the slope is 7.2 you subtract

3 0

3 years ago

Daniel had $57 to spend on gifts he spent $10.51 on a gift for Isaac $8.73 on a gift for madison and $8.47 on a gift for Abigail

mina [271]

57-10.51=46.49
46.49-8.73=37.76
37.76-8.47=29.29
Therefore Daniel has $29.29 left.

7 0

3 years ago

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