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2 years ago

Write or draw to explain two different ways to find the difference for 12-3

Mathematics

2 answers:

ValentinkaMS [17]2 years ago

8 0

12-3=9
12+(x)=-3
-3+(x)= -12

vladimir2022 [97]2 years ago

7 0

12-3 is 9. Another way to find the difference is by drawing out 12 shapes and canceling out 3. When you count up the remaining shapes you get 9. Another way is simply by subtracting 3 from 12 to get 9.

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A line passes through the point ( -10, 4) and has a slope of 1/2

qwelly [4]

Answer:

$y-4=\frac{1}{2} (x+10)$

Step-by-step explanation:

Point-slope form: $y-y_1=m(x-x_1)$ when the given point is $(x_1,y_1)$ and the slope is $m$

$y-y_1=m(x-x_1)$

Plug in the point (-10,4)

$y-4=m(x-(-10))$

Two negatives make a positive

$y-4=m(x+10)$

Plug in the slope

$y-4=\frac{1}{2} (x+10)$

I hope this helps!

3 0

2 years ago

3(x+2)^2=48 with word steps

lesya692 [45]

Answer:

Divide both sides by 3.

(x+2)^2=16

Square root both sides.

x+2= ± 4 (plus OR minus, can be either so we have to include both)

Minus 2 from both sides.

x=-2 ± 4

Add and minus the 4 to -2.

x = -2-4 = -6 and x=-2+4 = 2

8 0

2 years ago

Read 2 more answers

Solve for X (picture included)

Fynjy0 [20]

Answer:

x = 41

Step-by-step explanation:

(2x+20) + (2x-4) = 180 degrees

4x+16 = 180 degrees

4x = 164

x = 41

The two sides are supplementary and add up to 180 degrees.

6 0

2 years ago

Functions A,B and C are linear functions. Some values of function A are shown in the table. Function B has y-intercept of (3,0)

cricket20 [7]

Answer:

In order of increasing slope:

B: y = 0

A: y = 2x-3

C: y = 3x+1

Step-by-step explanation:

(3,3), (5,7), and (6,9) are points on line A.

Use the coordinates of two of the points to find the slope of A.

Δy =7-9 = -2

Δx =5-6 = -1

Slope = Δy/Δx = 2

Equation for line of slope 2 that passes through (3,3):

y-3 = 2(x-3)

y = 2x-3

(3,0) and (5,0) are points on line B. They are horizontally aligned, so the equation for line B is y=0. Slope = 0.

You were given the equation for C: y = 3x+1. Slope = 3

In order of increasing slope:

B: y = 0

A: y = 2x-3

C: y = 3x+1

8 0

2 years ago

A recipe for individual chocolate hazelnut tarts calls for ½ cup of hazelnuts per tart. If 1 cup of hazelnuts weighs 4 ounces, w

DerKrebs [107]

Answer:

The amount is sufficient to make 75 tarts.

Step-by-step explanation:

We have been given that a recipe for individual chocolate hazelnut tarts calls for ½ cup of hazelnuts per tart and 1 cup of hazelnuts weighs 4 ounces.

The half cup of hazelnuts will weigh 2 ounces $(\frac{4}{2}=2)$ .

1 kg equals 35.274 ounces.

$\text{5 kg}=5\times 35.274\text{ ounces}$

$\text{5 kg}=176.37\text{ ounces}$

Since each tart needs ½ cup of hazelnuts and half cup of hazelnuts will weigh 2 ounces, so we will divide 176.37 ounces by 2 to find number of tarts.

$\frac{176.37}{2}=88.185\approx 88$

Since we can make 88 tarts from 5 kg hazelnuts, therefore, the 5-kilogram bag of hazelnuts be sufficient to make 75 tarts.

7 0

3 years ago