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3 years ago

18

Mathematics

2 answers:

OLEGan [10]3 years ago

6 0

Answer:

see explanation

Step-by-step explanation:

Jenny has followed the wrong order of operations, in that she has subtracted before multiplying.

Following the order as directed by PEMDAS

Multiplication is performed before subtraction

Given

12 - 2 × 4 ← perform multiplication

= 12 - 8 ← perform subtraction

= 4

victus00 [196]3 years ago

3 0

She followed the wrong order of operations.

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Help plz i dont understand

max2010maxim [7]

Answer:

The answer is 90;

Step-by-step explanation:

since each variable has a given value, just plug the numbers into the equation.

3(6)5=90

Since there is no <em>d </em>in the equation, don't worry about it:)

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3 years ago

Can someone help me with factoring by grouping

Wittaler [7]

Factor : x^2+3x-10

Answer = (x - 2)(x + 5)

Explanation:

Y = x^2 + 3x - 10.

Find 2 numbers knowing sum (3) and product (-10).

Factor pairs of (-10) -> (-1, 10)(-2, 5). This sum is 3 = b. The 2 numbers are: -2 and 5.

y = (x - 2)(x + 5).

6 0

3 years ago

Read 2 more answers

1.What is the equation of the line perpendicular to that passes through ? Write your answer in slope-intercept form. Show your

Juliette [100K]

Answer:

1. Use a compass to make arc marks which intersect above and below then connect.

2. $y=\frac{1}{3}x + 2$

Step-by-step explanation:

1. To construct a perpendicular line, use a compass to draw arc marks from one end of the segment through point P. Then repeat this again at the other end. This means at point P there will be two intersecting arc marks. Repeat the process down below with the same radius as used above. Then connect the two intersections.

2. The point slope form of a line is $(y-y_1)=m(x-x_1)$ where $x_1=-3\\y_1=1$ . We write

$(y-1)=m(x--3)\\(y-1)=m(x+3)$

Since the line is to be perpendicular to the line shown it will have the negative reciprocal to the slope of the function 3x+y =-8. To find m, rearrange the function to be y=-8-3x. The slope is -3 and the negative reciprocal will be 1/3.

$(y-1)=\frac{1}{3}(x+3)$