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chubhunter [2.5K]
3 years ago
15

( please help this is the last question and i have 4 min left, thank you for the help!)

Mathematics
1 answer:
Naddik [55]3 years ago
4 0

Answer:

Step-by-step explanation:

-4x∧2  -1

-4x squared minus one

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Work out 50% of 23kg?
pentagon [3]

Answer:

11.5 kg

Step-by-step explanation:

Is  means equals and of means multiply

50% * 23 = W

Change to decimal form

.50 * 23 =W

11.5 = W


5 0
4 years ago
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Please help me for this question
Nezavi [6.7K]

Answer:

Mid-point: (0,-5)

Equation: y=\frac{7}{3}x-5

Step-by-step explanation:

To find the mid-point of AB, simply add up their x and y coordinates and divide by 2 respectively to find their middle point.

(\frac{{x__A}+{x__B}}{2},\frac{{y__A}+{y__B}}{2})

(\frac{{-7}+{7}}{2},\frac{{-2}+{(-8)}}{2})

(0,-5)

To find the perpendicular slope that passes through the mid-point, we need to know the slope between AB first.

Slope of AB: \frac{{y__2}-{y__1}}{{x__2}-{x__1}} = \frac{{-8}-{-2)}}{{7}-{(-7)}} = \frac{-6}{14} = \frac{-3}{7}

Multiplying slopes that are perpendicular with each other always results in -1.

\frac{-3}{7}*m = -1

m=\frac{7}{3}

By the point slope form:

({y}-{y__1})=m({x}-{x__1})

Plug in the coordinates of the mid-point:

({y}-{(-5)})=\frac{7}{3} ({x}-{0})

Equation: y=\frac{7}{3}x-5

6 0
3 years ago
Which expression is equivalent to 8a+3b+4a-9b??<br> Please help!
Juli2301 [7.4K]

Answer:

12a - 6b

Step-by-step explanation:

Given

8a + 3b + 4a - 9b ← collect like terms

= (8a + 4b) + (3b - 9b)

= 12a + (- 6b)

= 12a - 6b

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Answer:

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7 0
3 years ago
2(x-8)+4x=20 who can I use this in a model or visual
CaHeK987 [17]

Answer:

both

Step-by-step explanation:

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3 years ago
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