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3 years ago

Can you guys help me with this question

Mathematics

2 answers:

VLD [36.1K]3 years ago

3 0

Answer:

2+2=4 quick mafs

Step-by-step explanation:

Rufina [12.5K]3 years ago

3 0

Answer:

4x-1=55
x=14

Explanation:

they’re vertical angles so they’re congruent

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What is 3/7ths of 63

Jet001 [13]

63: 1 x 63 3 x 21 7 x 9................

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3 years ago

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Please show me how to solve for Xsquared - 21.75X = -15.75. I have the solution but do not know how to solve it.

Andreas93 [3]

$x^2-21.75x=-15.75 \\
x^2-21.75x+15.75=0$

Use the quadratic formula:
$x^2-21.75x+15.75=0 \\ \\
a=1 \\ b=-21.75 \\ c=15.75 \\ b^2-4ac=(-21.75)^2-4 \times 1 \times 15.75=473.0625-63=410.0625 \\ \\
x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-(-21.75) \pm \sqrt{410.0625}}{2 \times 1}=\frac{21.75 \pm 20.25}{2} \\
x=\frac{21.75-20.25}{2} \ \lor \ x=\frac{21.75+20.25}{2} \\
x=\frac{1.5}{2} \ \lor \ x=\frac{42}{2} \\
x=\frac{15}{20} \ \lor \ x=21 \\
x=\frac{3}{4} \ \lor \ x=21 \\
\boxed{x=\frac{3}{4} \hbox{ or } x=21}$

3 0

3 years ago

If the expression 5+2x was evaluated for x=4 it’s value would be

iris [78.8K]

Answer: 13

Step-by-step explanation:

5+2x

When x=4

5+2(4)

5+8

= 13

5 0

3 years ago

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Piz help me fast asap thx

Effectus [21]

Answer:

y= 7703.5

Step-by-step explanation:

multiply 7100 by 1.085

5 0

3 years ago

Given: AB tangent at D, AD = OD = 4 Find: Area of the shaded region

MrMuchimi

Answer:

1.72

Step-by-step explanation:

AB tangent at D, AD = OD = 4

so triangle OAD is right angle with side of 4 and 4.

area of OAD = 1/2 * 4 * 4 = 8

Angle AOD = DAO = 45 deg.

so circular sector OCD area = area of circle O * 45/360

= pi * 4 * 4 * 45/360

= 2pi

Shade area ACD = trigangle OAD - circular sector OCD

= 8 - 2pi

= 1.72

4 0

3 years ago