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netineya [11]
3 years ago
11

Measure the angle of 4x+12

Mathematics
2 answers:
postnew [5]3 years ago
6 0

Answer:

52°

Step-by-step explanation:

6x - 8= 4x + 12 \\ (exterior \: alternate \:  \angle s) \\  \\ 6x - 4x = 12 + 8 \\  \\ 2x = 20 \\  \\ x =  \frac{20}{2}  \\  \\ x = 10 \\  \\ 4x + 12 = 4 \times 10 + 12 \\  \\4x + 12  = 40 + 12 \\  \\ 4x + 12 = 52 \degree

zvonat [6]3 years ago
5 0

Answer:

4(x+3)

Step-by-step explanation:

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A math class has 3 girls and 9 boys in the seventh grade and 7 girls and 3 boys in the eighth grade. The teacher randomly select
vladimir1956 [14]

Answer:

7/40

Step-by-step explanation:

There are 3 girls+9 boys = 12 students in the 7th grade

P (girl in 7th grade) = girls/ total

                                = 3/12 = 1/4

There are 7 girls+3 boys = 10 students in the 8th grade

P (girl in 8th grade) = girls/ total

                                = 7/10

P(7th grade girl, 8th grade girl) = 1/4 * 7/10 = 7/40

8 0
3 years ago
Find an equation of the plane tangent to the following surface at the given point.z equals tangent Superscript negative 1 Baseli
Sergeeva-Olga [200]

Let <em>f(x</em>, <em>y</em>, <em>z)</em> = <em>z</em> - arctan(<em>x y</em>). Compute the gradient of <em>f</em> at the point (0, 3, 0):

∇ <em>f(x</em>, <em>y</em>, <em>z)</em> = (-<em>y</em> / (1 + <em>x</em>²<em>y</em>²), -<em>x</em> / (1 + <em>x</em>²<em>y</em>²), 1)

∇ <em>f </em>(0, 3, 0) = (-3, 0, 1)

This vector is orthogonal to the surface <em>z</em> = <em>f(x</em>, <em>y)</em>. Then the equation of the tangent plane is

∇ <em>f </em>(0, 3, 0) • (<em>x</em>, <em>y</em> - 3, <em>z</em>) = 0

(-3, 0, 1) • (<em>x</em>, <em>y</em> - 3, <em>z</em>) = 0

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Answer:

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lana [24]

Answer:

23w

Step-by-step explanation:

For 6days, She skates 3 * 6 = 18 miles

on weekend she skates 5 miles

Thus, In one week, she skates 23miles

In w week, she skates: 23w

3 0
3 years ago
I really need help please help me​
dezoksy [38]

Answer:

2.82

Step-by-step explanation:

I tried my best so im sorry if it isnt correct

x4-5x2-24=0

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x2 +3=0

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3 years ago
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