Mathematics High School

If four is added to a half of a
number. The result is equal to 2.
What is the number?​

Answers

Answer 1

Answer:

-2

Step-by-step explanation:

4 + negative 2 (or -2) = 2

Related Questions

Can you help me please thank you

Answers

Answer:

4. 6x^2 - 3x + 1
5. x^2 - 12x + 36

Explanation:

(12x^3 - 6x^2 + 2x) / 2x
6x^2 - 3x + 1

(x-6)^2
(x - 6) (x - 6)
x^2 - 6x - 6x + 36
x^2 - 12x + 36


Find the length of side x in simplest radical form with a rational denominator

Answers

Answer:

x = 8/√3

Step-by-step explanation:

We solve that above question using the trigonometric function of sin

Sin theta = Opposite/Hypotenuse

Theta = 60°

Opposite = 4

Hypotenuse = x

Hence,

Sin 60 = 4/x

Cross Multiply

sin 60 × x = 4

x= 4/sin 60

in rational form

sin 60 = √3/2

Hence, x = 4/ √3/2

= 4 ÷ √3/2

= 4 × 2/√3

= 8/√3

Given the following perfect square trinomial, fill in the missing term. (2 points)
9x^2 +___+25

Answers

Answer:

30x

Step-by-step explanation:

missing must be 2×3x×5=30x

9x²+30x+25=(3x+5)²

How to find the arc length (geometry)

Answers

Answer:

94.2

Step-by-step explanation:

Arc length is basically circumference.

Circumference formula: 2πr

All we need is the radius.

Radius = r

15 x 2 = 30 (diameter)

Then we are going to multiply by pi.

Arc length = 30π OR 94.2

The marked price of a radio is Sh. 12600. If the shopkeeper can allow a discount of 15% on the marked price and still make a profit of 25%.At what price did the shopkeeper buy the radio?​

Answers

Answer:

13388

Step-by-step explanation:

12600 will be 100% so we want to get at what price its sold when there is a 15%dicount

So will minus 15% from the 100% of the Mp

100%-15%=85%

so if 100%=12600

what about 85%=?

we crossmultiply

85%×12600/100%=10710

so10710 is what the radio will be sold if a 15% dicount is given but we want to get wat price the shopkeeper got in that he made a profit of25%

so if 100%=10710

what about 125%

125%×10710/100%=13387.5 which is 13388/=

A ladder that is 18 ft. long is leaning
against the side of a building. If the angle
formed between the ladder and the ground
is 30°, how far is the bottom of the ladder
from the base of the building?

Answers

it’s cut off, but the bottom side of the triangle is labelled ‘x’
hope this helps!

A pump fills a pool at a constant rate. At the end of 1 minute it has filled 6 gallons of water. Which table represents the relationship between the number of minutes and the number of gallons of water in the pool?​

Answers

Answer:

I would need to see the different tables to answer this question.

Pls help, question on picture, will do brainliest if right
no links!!!!!

Answers

sin = opposite/hypothenuse
Given opposite = 16
Hypothenuse = ?
Use Pythagorean theorem to find hypothenuse

12^2 + 16^2 = h^2
144 + 256 = h^2
h^2 = 400, h = 20

You know hypothenuse is 20
Opposite/hypothenuse

Solution: 16/20
Simplify if you need to (4/5)

Answer:

[tex]\boxed {\boxed {\sf sin(\theta)=\frac {16}{20}}}[/tex]

Step-by-step explanation:

We are asked to find the sine for the angle indicated. Remember that sine is equal to the opposite over the hypotenuse.

sin(θ)= opposite/hypotenuse

Analyze the triangle given. We have the 2 legs (16 and 12), but we do not have the hypotenuse (the longest side). We must solve for it.

Since this is a right triangle, we can use the Pythagorean Theorem.

[tex]a^2+b^2=c^2[/tex]

Where a and b are the legs and c is the hypotenuse. We know 16 and 12 are the legs.

[tex](16)^2+(12)^2=c^2[/tex]

Solve the exponents.

16²= 16*16=25612²= 12*12= 144

[tex]256+144=c^2[/tex]

[tex]400=c^2[/tex]

Since we are solving for c, we must isolate the variable. It is being squared, so we take the inverse: a square root.

[tex]\sqrt{400}=\sqrt{c^2} \\20=c[/tex]

Now we know the hypotenuse is 20. The side opposite of the angle θ is 16.

opposite= 16 hypotenuse=20

[tex]sin (\theta)= \frac {opposite}{hypotenuse} \\sin (\theta)= \frac{16}{20}[/tex]

The sine of the angle is equal to 16/20. This can be reduced to 4/5 if necessary (by dividing the numerator and denominator by 4).

Since the arithmetic mean of the above data is 20, what is the span?
A) 45. B) 40. C) 35. D) 30​

Answers

Answer:

Step-by-step explanation:

Calculate the value of (6.9x10^-3)x(2x10^9) Give your answer in standard form.

Answers

I think the answer is 1.38 times 10^7.

The cellphone Luke wants to buy is on sale for 15% off the original price. It was originally priced at $150. What is the amount of the discount?

Answers

$22.50 is the amount of the discount.

To calculate this, we’ll turn the percentage to a decimal by dividing by 100. 15% = 0.15

150 x 0.15 = 22.50

What is the solution of 3x + 5 = 2x - 7?

Answers

Answer:

[tex]x=-12[/tex]

Step-by-step explanation:

[tex]3x+5=2x-7[/tex]

Subtract 2x from each side,

[tex]x+5=-7[/tex]

Subtract 5 from each side to find x,

[tex]x=-12[/tex]

Help help help help help help

Answers

Answer: 19 mins

Step-by-step explanation:

hope this helps

A bus route takes about 45 minutes. One driver's times for 9 runs of the route are shown.
Times to Complete Bus Router (min)
44.6 44.8 45.0 44.7 44.6 44.9 44.8 44.8 45.0
Calculate the mean of the bus times.
The mean time for this driver to complete the route was
minutes.

Answers

You need to add all the numbers(358.4) and then divide by the total amount of numbers not counting 45 twice(8) and the answer is 44.8

Dwayne buys ingredients to make a cake. He buys 1 1/2 pounds of flour, 12 ounces of coconut, and 1 1/4 pounds of sugar. What is the total weight of the ingredients Dwayne bought?

Answers

Answer:

56 oz or 3 1/2 lbs

Step-by-step explanation:

1 1/4 + 1 1/2 = 2 3/4lbs = 44 oz

44 oz + 12 oz = 56 oz

Answer:

81/4

Step-by-step explanation:

the answer is not sure

Rosie bought a ring in the USA she paid 345 US dollars work out in pounds the amount rosie paid for the ring

Answers

1 Us dollar equals to 0.72 Pound sterling so to convert 345 US dollars to British sterling we’ll need to multiply the amount of dollars by 0.72, so
345 x 0.72 = 248.4
345 us dollars = 248.4 British pounds
Rosie paid 248.4 British pounds for the ring. Hope this helped

Answer:

Step-by-step explanation:

The cone below has a radius of 1 inch and height of 4 inches. What is the slant height in inches?

a. √-5

b. √−−17

c. 15

d. 17

Answers

Answer:

Step-by-step explanation:

Can someone please help me with math.

Answers

4- 20

I created an equation for this one:

4x+x=100

4x= four times the amount of the other numberx= the numbercombine like terms

5x=100

divide by 5

x=20

5. One pretzel costs $3

Create an equation:

2s+p=74s+3p=17

Mulitply 2s+p=7 by -2 so you can use elimination.

-4s-2p=-144s+3p=17

Combine equations

p=3

For #3
there will be 8 geese and 12 pigs

the equation would be first to find out how many geese there are

pigs have 4 feet and geese have 2
g=geese p=pigs

4(20-g)+2g=8

now we know there are 8 geese which is 8•2 so 16 feet!

now use what we know to find out how many pigs there are

20-8 is 12 which means 12 pigs or 12•4 which means 48 feet

you can check it by adding the feet and animals

12+8=20 animals
48+16=64 feet!

4.*
The circle with center O has a circumference of 36 units. What is
the length of minor arc AC?
C
A. 9 units
B. 12 units
C. 18 units
D. 36 units

Answers

Answer:

9 units

Step-by-step explanation:

got it right on edg

1. 2
given that c = 2πr an, write an expression
for r.​

Answers

Answer:

r = c / 2π

Step-by-step explanation:

c = 2πr is the formula for the circumference of a circle of radius r.

We can solve this for r:

r = c / (2pi)

or

r = c / 2π

Yasmin ordered 20 sandwiches for the STEM club's after school meeting. Some were turkey and some were ham sandwiches. Turkey sandwiches cost $5.50 and ham costs $4.50. The total bill was $97. How many turkey sandwiches were ordered?

Answers

7 TURKEY AND 13 HAM

I USED CALCULATOR BTW

What is 3.72 of 0.6?

Answers

Answer:

Since I do not know the context of the question I will list answers I think it could be based on what you asked:

1. 3.72 x 0.6 = 2.232

2. 3.72 ÷ 0.6 = 6.2

3. 3.72% of 0.6 = 0.02232

The answer is probably the first one. I can't give a definite solution without knowing the exact question being asked, sorry!

30^2 + 15^2 = c^2
Use pythagorean theorem

Answers

Answer:

c = 33.5

Step-by-step explanation:

[tex]30^{2} + 15^{2} = c^{2}[/tex]

[tex]900 + 225 = c^{2}[/tex]

[tex]1125 = c^{2}[/tex]

(find square root of both sides to get c alone)

[tex]c = 33.541[/tex]

A chef at a restaurant uses pounds of butter each day. About how many grams of butter does the chef use each​ day? Use the conversion factors and .

Answers

Complete question :

A chef at a restaurant uses 12 pounds of butter each day. About how many grams of butter does the chef use each day? use the conversion factors 16 oz/1 lb and 28.35 grams/1oz

Answer:

5,424 grams

Step-by-step explanation:

To convert using the conversion factor :

Number of pounds of butter * (16 oz/1) * (28.35) /1

Hence,

12 * 16oz/ 1 * 28.35/1

(12 * 16 * 28)

= 5,424 grams

If 55 yards of dirt costs $825.00 what is the constant of proportionality?

Answers

Answer:$15 per yard

Step-by-step explanation: $825 divided by 55 = $15

15 dollars per yard

Can someone please help me with this page

Answers

Answer:

2. there is no E it would be AB=CD

PLEASE HELP! all u have to do is determine if it is positive or negative!

Answers

the answer is negative

Answer:

I think it is positive.

Step-by-step explanation:

Iam soory if Iam wrong.

Raymond has two bags of candy. • Bag A has 15 total pieces of candy, 9 are chocolate candies. Bag B has 10 total pieces of candy, 5 are chocolate candies. Which statement is true?

Answers

Answer:

The probability of selection of chocolate candy from bag A is ( 10%) bigger than from the bag B

Step-by-step explanation:

From bag A the probability (p₁ ) of selection  ( in a random sample) of one chocolate candy is

p₁ = 9/15       p₁  = 0,6

From bag B the probability ( p₂ ) of selection ( in a random sample) of one chocolate candy is:

p₂ = 5/10       p₂ = 0,5

Then the probability of selection of chocolate candy from bag A is bigger than from the bag B

p₁ > p₂      p₁ - p₂  = 0,6 - 0,5       p₁ - p₂ = 0,1    p₁ - p₂ = 10%

p

I need help desperately question in picture

Answers

Answer:

25.3

Character minimum

T
3/6
35. A soccer ball has a diameter of 9 inches. What is the volume to the nearest tenth? (TEKS
8.7A-R)
A 381.7 in
A
B
С
D
E
B 190.9 in
C 268.1 in
D 321.6 In

Answers

Answer:

I NEED HELP ON THE SAME QUESTION

Step-by-step explanation:

NO ONE INDERSTANDS JT FOR SOME REASON AND NEITHER DO I

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