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Serggg [28]
3 years ago
14

How do I solve this?​

Mathematics
1 answer:
icang [17]3 years ago
8 0

Good morning ☕️

Answer:

(x+\frac{7}{2} )^{2} -\frac{69}{4}

Step-by-step explanation:

x^{2} +7x-5=(x+\frac{7}{2} )^{2} -(\frac{7}{2})^{2} -5\\\\=(x+\frac{7}{2} )^{2} -((\frac{49}{4})+\frac{20}{4}) \\\\=(x+\frac{7}{2} )^{2} -\frac{69}{4}

________________________

:)

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The Mariners buy jerseys wholesale for $48 and sells for $468. What’s the markup rate?
AlekseyPX

Answer:

975%

Step-by-step explanation:

468/48 - 9.75

9.75 in percent form is 9.75*100=975%

Too much for a Mariners jersey if you ask me :D

8 0
3 years ago
Choose one of the factors of 500x3 + 108y18
sammy [17]

Answer:

Option C

Therefore, one of the factors of 500x^3 +108y^\left (18\right ) is (5x+3y^6).

Step-by-step explanation:

Given: 500x^3 +108y^\left (18\right )

the common factor from 500x^3 and 108y^\left (18\right ) is 4.

therefore, 4\cdot \left ( 125x^3+27y^\left (18\right ) \right )

4\cdot \left ( (5x)^3+(3y^6)^3 \right))

Now, use the formula for above expression: (a^3+b^3)=(a+b)(a^2-ab+b^2)

here, a=5x and b=3y^6

( (5x)^3+(3y^6)^3 \right))=(5x+3y^6)(25x^2-15xy^6+9y^12)

Therefore, we have

500x^3 +108y^\left (18\right )=4\cdot (5x+3y^6)\left (25x^2-15xy^6+9y^\left ( 12 \right )  \right )

Therefore, one of the factors of 500x^3 +108y^\left (18\right ) is (5x+3y^6).








7 0
3 years ago
Read 2 more answers
Plz help, I don't need the show all work.
topjm [15]

Answer:

The answer is 108 cm²

Step-by-step explanation:

First, you have to find the height of the parallrelogram using trogonometric formula, sinθ = oppo./hypo. :

oppo. = height

hypo. = 9 cm

θ = 59°

sin 59° = height/9

height = 9 sin 59°

= 7.715 cm (4s.f)

Given that the formula of area of parallelogram is, A = base×height. Then, you can substitute the value into the formula :

base = 14 cm

height = 7.715 cm

A = 14 × 7.715

= 108 cm² (3s.f)

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3 years ago
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Sonya expected to get $60 for her birthday ,but she only got $40.What was the percentage decrease of the amount Sonya recieved?
kow [346]
Are you asking about the percent of change?if so the answer is 33.3%.
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3 years ago
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Keith is the team manager for his school's soccer team. He is ordering team uniforms for the upcoming season. • Uni-Fit charges
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The answer is C hope this help
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