Answers
Answer:
Step-by-step explanation:
place x = 19
f(19) = 3 / 19 + 2 - Sqrt 21 - 3
= 3/21 - 4
= - 81/21
= - 27/7
Answer:
f(19) = - [tex]\frac{27}{7}[/tex]
Step-by-step explanation:
Given
f(x) = [tex]\frac{3}{x+2}[/tex] - [tex]\sqrt{x-3}[/tex]
To evaluate f(19), substitute x = 19 into f(x) , that is
f(19) = [tex]\frac{3}{19+2}[/tex] - [tex]\sqrt{19-3}[/tex]
= [tex]\frac{3}{21}[/tex] - [tex]\sqrt{16}[/tex]
= [tex]\frac{1}{7}[/tex] - 4
= [tex]\frac{1}{7}[/tex] - [tex]\frac{28}{7}[/tex]
= - [tex]\frac{27}{7}[/tex]
Related Questions
help me please i have literally 20 missing assignments and i'm so stressed out.
Answers
What 24 please help me asap
Free brainliest
Answers
Answer:
try 4
Step-by-step explanation:
hope this helps
Answer:
4
Step-by-step explanation:
Please help me with this question!
Answers
Answer:
180 = 4b + 24
4b = 180 - 24
4b = 156
b = 156/4
b = 39
Using π = 3.14, what is the circumference of a circle with a radius of 18 units? Round your answer to the nearest hundredth.
Answers
Circumference - 2 x PI x radius
Circumference - 2 x 3.14 x 18 = 113.04 units
Please help me with this
Answers
Answer:
The scale factor is 3
Step-by-step explanation:
The reason is that 12, 15, and 9 equal 4, 3, and 5 if divided by 3
Create an equation to solve for x, then solve to find its value.
Answers
Answer:
Equation: x + 16 + 13 + x = 21 ; x = -4
Step-by-step explanation:
x + 16 + 13 + x = 21 (Given)
2x + 29 = 21 (Added like terms)
2x = -8 (Subtracted 29 on both sides)
x = -4 (Divided 2 on both sides)
Answer:
Step-by-step explanation:
How many terms are in the expression 4x5 - 2x3 + 6x -2?
Answers
Answer: 3
Step-by-step explanation:
If a person has 6 tacos and will share with one other person, but the person eats 1.6 more than the other person how much tacos go to each. This could be in decimal form. What would the equation be to solve for x?
Answers
Step-by-step explanation:
First, let us assume x = share of the first person who owns 6 tacos and y = the share of the other person whom x shared his tacos with.
[tex]6 = x + y \\ but \: y = 1.6 + x \\ 6 = x + (1.6 + x) \\ 6 - 1.6 = x + x \\ \frac{4.4}{2} = \frac{2x}{2} \\ 2.2 = x \\ \\ y = 1.6 + x \\ = 1.6 + 2.2 \\ = 3.8[/tex]
6(6)-20-32(1/4)
help plz
Answers
Answer:
8
Step-by-step explanation:
6(6)-20-32(1/4)
36-20- 8
16-8
8
please help me before 3pm est
A deli sells small, medium, and large sack lunches. Each bottle of water costs $1,
and each apple costs $1. Each sandwich costs s dollars. Some customers buy
sack lunches, and some customers buy items separately.
• Amy buys 8 sandwiches and 12 waters. Her total cost is 8s + 12.
• Bob buys 8 small sack lunches. These sack lunches include 1 sandwich, 1
water, and 1 apple. His total cost is 8(s + 2).
• Cathy buys 4 medium sack lunches. These sack lunches do not include
water. Her total cost is 4(2s + 3).
Part 1
Dave buys 5 sandwiches for $31.25. Write an expression that can be used to find
the cost of x sandwiches. Show your work or explain your answer.
Answers
Answer: The expression that can be used to find the cost of x sandwiches is 6.25x.
Step-by-step explanation:
Given: Cost of 5 sandwiches = $31.25
To find : Cost of x sandwiches.
Cost per sandwich = ( Cost of 5 sandwiches) ÷ 5
= (31.25 )÷ 5
= $ 6.25
Cost of x sandwiches = (Cost per sandwich) × (x)
= 6.25x
Hence, the expression that can be used to find the cost of x sandwiches is 6.25x.
Describe and correct
the error in rewriting the expression.
6(y + 8) = 6y + 8
Answers
Answer:
it should be 8y× 6 i think
6y + 48
Explanation:
6 x y = 6y
6 x 8 = 48
Annelle can drive an average of 295 miles on one tank of gas. How many miles can she drive on 16 tanks of gas?
Answers
- this is a multiplication question.
16 X 295 = 4720 miles
- request: please mark brainiest, and click the thanks button if correct <3
In parallelogram , ABCD ∠A has a measure of 62° . Find the measures of ∠B and ∠C.
Answers
Answer:
<C = 62 degrees, <B= 118 degrees
Step-by-step explanation:
Opposite angles of parallelograms are always congruent.
Consecutive ( angles that are next to each other ) always add up to 180.
180-62=118
Please help! Please!
Answers
Answer:
1 is 4
2 is 56
Step-by-step explanation:
Contestants in a dance-a-thon rest for the same amount of time every hour. A couple rests for 15 minutes in 3 hours. How long did they rest in 7 hours?
Answers
Answer:
35 Minutes
Step-by-step explanation:
15 minutes divided by 3 hours = 5 minutes an hour
7 x 5 = 35
PLEASEE I NEED HELP I WILL GIVE BRAINLIST :))) ( btw im dump)
Answers
Step-by-step explanation:
u know u can download math go and u just take a picture and it will give u the answer
Rewrite 140 1/8 in radical form.
Answers
Answer:
8 √ 140
Step-by-step explanation:
what is 2 2/3 divided by 3/5?
Answers
Answer:
4.44444
Step-by-step explanation:
yeah just type it in a calc
A fair coin is tossed 16 times. what is the standard deviation for the number of heads?
Answers
Answer:
8 times.
Step-by-step explanation:
PLEASE HELP I WILL VOTE BRAINLIEST
Answers
Answer:
3.30 would be an average change rate if its wrong ill fix it i want braniest bad so if its wrong let me no or if i didnt answer correct
Step-by-step explanation:
Five friends are sharing 8 cups of lemonade. If they share the lemonade equally, how many cups will each friend get?
Answers
Answer: 1 3/5
Step-by-step explanation:
From the question, we are informed that five friends are sharing 8 cups of lemonade and that they share the lemonade equally.
The number of cups that each friend gets will be calculated by dividing the number of cups of lemonade by the number of friends. This will be:
= 8 / 5
= 1 3/5
7th grade math help me plzzz
Answers
Answer:
1,2.5
3,4.5
4,5.5
6,7.5
8,9.5
Step-by-step explanation:
Ramon earns $1,835 each month and pays $53.80 on electricity. To the nearest tenth of a percent, what percent of Ramon's earnings are spent on electricity each month?
Answers
Answer:
Sorry Iam at exam now
I know the answer but IAM writing exam
Taco sauce.
$3.84 divide 24 oz.
Answers
Answer: 0.16
Step-by-step explanation:
2
A cone has base of radius 2cm.
The perpendicular height of the cone is 5cm.
Calculate the surface area of the cone
Answers
Answer:-
A ≈ 46.4
Step-by-step explanation: -
Formula: πrl + π r²
l = √r² + h²
hope it helped
I'm mad slow I need help :(
Answers
Answer:
10 inches
Step-by-step explanation:
All you have to do is add the side you are given then subtract it from the total!
15+15+10=40 50-40=10!
I hope this helps and have a great day! :)
Answer:
10 inches
Step-by-step explanation:
As you can see the perimeter is equal to 50 inches. This means that if you added up all the sides it would equal to that perimeter. In order to find the missing side, you would need to add all the sides that you know. This gives you 40 then subtract it from 50 which gives you 10.If you rather not do all the work its very noticeable that the side to the left of it is equal to it in size.
Read this sentence from a student essay and then answer the question.
Manjiro is brave and shows this bravery in a variety of ways.
Which choice best revises the sentence so that it offers text evidence from Heart of a Samurai?
Manjiro is the bravest character in the story, and he shows this bravery in many different ways.
Manjiro is brave and shows this bravery as he jumps into the sea and swims determinedly toward the boats.
Manjiro is not only brave, but also he is extremely resourceful and one day dreams of becoming a samurai.
Manjiro is brave, resourceful, and filled with lots of questions that he is always asking of the others.
Answers
Answer:
c
Step-by-step explanation:
Answer: C
Step-by-step explanation:
Manjiro is not only brave, but also he is extremely resourceful and one day dreams of becoming a samurai.
Brian is a Salesman for a wholesale computer parts company he earns straight commission at a rate of 4% last month his total sales were $82,968 what was his gross monthly income last month
Answers
Answer:
the gross monthly income last month is $3,318.92
Step-by-step explanation:
The computation of the gross monthly income last month is shown below:
= Total sales × commission percentage
= $82,968 × 4%
= $3,318.92
hence, the gross monthly income last month is $3,318.92
We simply multiplied the total sales with the commission percentage
The distance from town X to town Y is 200 km. The distance from town X to town Z is 135 km. Looking from town Y, town X and town Z are separated by an angle of 42
Answers
Complete question :
The distance from town X to town Y is 200 km. The distance from town X to town Z is 135 km. Looking from town Y, town X and town Z are separated by an angle of 42°. Sketch possible diagrams for this situation. Calculate the possible distances from town Y to town Z.
Answer:
166 km
Step-by-step explanation:
Given that :
X to Y = 200km
X to Z = 135 km
X and Z are separated by 42°
Using Sine rule :
x
z / sinZ = y / sinY
200/ sinZ = 135/sin42
SinZ = (200 * sin42) / 135
SinZ = 0.9913046
Sin^-1 (0.9913)
Z = 82.438
Z = 82.44
Hence,
X = 180 - (Z + Y) (angles in a triangle)
X = 180 - (82.44 + 42)
X = 55.56°
To obtain x:
x / sin X = y / sin Y
x / sin 55.56 = 135 / sin 42
x * sin 42 = sin 55.56 * 135
x = (55.56 * 135) / sin42
x = 111.33704 / 0.6691306
x = 166.39059
Hence, possible Distance from town Y to town Z= 166 km
10x - 20 = 4x - 2
How would I do this step by step?
Answers
10x-4x=-2+20
6x=18
X=3
Answer:
3
Step-by-step explanation:
so your gonna have to collect the like terms:
10x - 4x = 6x
-2 + 20=18
new equation: 6x=18 and so you'll have to divide
and it'll be 3
