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3 years ago

Please show me how to solve for Y 4(7y+x)=4

2 answers:

6 0

If x were to equal negative 13 then y would equal 2 because 7 times 2 equals 14 and 14 times 4 equals 56. negative 13 times 4 equals negative 52 so you would do keep change opposite or 56 minus 52 and get 4

Svetllana [295]3 years ago

5 0

4(7y + x) = 4

solve for x = 0

4 × 7y = 4
28y = 4

divide by 28

/28 /28

y = 4 / 28

y = 1/7.

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a person standing on level ground is 2,000 feet away from the foot of a 420-foot tall building as shown in the diagran. To the n

irga5000 [103]

Answer:

TAN(x°) = 420/2000 --> x = 11.86° ≈ 12°

3 0

3 years ago

Nine less than 15 times a number is 6 write as a equation

Mila [183]

Let the number = x

You have 15 times the number so that is 15x

9 less would be subtracting 9:

15x -9

Is 6 means the equation equals 6:

The equation is: 15x-9 = 6

7 0

3 years ago

Tom weekly salary increased from $240 to $288 what was the percent of change

Greeley [361]

288 - 240 = 48

48/240 *100 = 20%

answer: i<span>ncreased 20%</span>

7 0

4 years ago

Determine whether the points lie on straight line.

wel

Answer:

A) Non-collinear- does not lies on straight line

B) Collinear- lie on straight line

Step-by-step explanation:

We have to check collinearity of three points.

The points $(x_1, y_1, z_1),(x_2, y_2, z_2),(x_3, y_3, z_3)$ are said to be collinear if,

$\left[\begin{array}{ccc}x_1&y_1&z_1\\x_2&y_2&z_2\\x_3&y_3&z_3\end{array}\right] = 0$

A) A(2, 5, 3), B(3, 7, 1), C(1, 4, 4)

$\left[\begin{array}{ccc}2&5&3\\3&7&1\\1&4&4\end{array}\right] \\\\=2(28-4)-5(12-1)+3(12-7)\\= 8 \neq 0$

Thus, the given points are not collinear.

B) D(0,-5,5), E(1,-2,4), F(3,4,2)

$\left[\begin{array}{ccc}0&-5&5\\1&-2&4\\3&4&2\end{array}\right] \\\\=0(-4-16)+5(2-12)+5(4+6)\\=0$

Thus, the given points are collinear.

6 0

3 years ago

Which is equivalent to 32 + 16

Scrat [10]

Answer:

8(4+2)

Step-by-step explanation:

Hi there! We know that 32+16=48 so all we have to do is find a expression that equals 48. 8(4+2)=48. 8(24+8)=256. 7(4+2)=42. 7(24+8)=224. Therefore, the expression that is equivalent to 32+16 is 8(4+2).

4 0

3 years ago

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