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3 years ago

Help me please..........

Mathematics

1 answer:

romanna [79]3 years ago

5 0

Answer: (-3; -11)

Step-by-step explanation:

$\left \bigg \{ {\big{y=7x+10} \atop\big {y=-4x-23}} \right.\\\\7x+10=-4x-23\\7x+10-10=-4x-23-10\\7x=-4x-33\\7x+4x=-4x-33+4x\\11x=-33\\11x \div 11=-33 \div 11\\x=-3\\\\y=7x+10\\y=7 \times (-3)+10=-21+10=-11$

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nadezda [96]

Answer:

a. Weekly Gross pay:

= 9.50 * 20

= $190

b. Federal tax withheld:

= 10% * 190

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c. FICA Tax withheld:

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= $10.74

d. State tax withheld:

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e. Weekly net pay

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2 years ago

Determine the value of a if one solution to the quadratic equation is x equals 5 + 3/2 I

Sindrei [870]

The value of a is $\frac{-9}{4}$

Step-by-step explanation:

1. Determine the other solution of x

If one value is 5 + $\frac{3}{2}$ then the other value is 5 - $\frac{3}{2}$

2. Use reverse technique to find the equation

(5 + $\frac{3}{2}$ ) (5 - $\frac{3}{2}$ ) = 0

25 - $\frac{-15}{2}$ + $\frac{15}{2}$ - $\frac{9x^{2} }{4}$ = 0

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3. The equation is - $\frac{9x^{2} }{4}$ + 25 = 0

4. Find the value of a

a is the number with the variable $x^{2}$ therefore it is - $\frac{9}{4}$

Keyword: quadratic equation, solution

Learn more about quadratic equation at

#LearnwithBrainly

8 0

3 years ago

At a computer store, a customer is considering 7 different computers, 9 different monitors, 8 different printers and 2 differ

AlekseyPX

Answer:

1008

Step-by-step explanation:

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3 years ago

The legs of a 45 45 90 triangle have a length of 8 units what is the length of the hypotenous

Crank

Answer:

11.31 units

Step-by-step explanation:

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8^2 + 8^2 = c^2

64 + 64 = c^2

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Opposite of exponents is square roots, and we need to get rid of that exponent in c^2, meaning we find the square root.

$\sqrt{128\\} \\\\$ = c

c = 11.31 units

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3 years ago

HELP ME PLEASE!

Amiraneli [1.4K]

(1.2×10^-3)/(4×10^6)
1.2/4=0.3
(10^-3)/(10^6)=10^-9

0.3×10^-9= 3×10^-10

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3 years ago