Answer:
x = ± 4i
Step-by-step explanation:
x^2 + 19 = 3
Subtract 19 from each side
x^2 +19-19 = 3-19
x^2 = -16
Take the square root of each side
sqrt(x^2) = sqrt(-16)
x = sqrt(-1*16)
x =sqrt(-1) * sqrt(16)
We know that the square root of -1 is the imaginary number i
x = ± 4i
For the equation Y = 2x - 3, complete the table for the given values of X
X Y
-1
1
3
Given:
The equation is:
[tex]y=2x-3[/tex]
The x-values in the given table are -1, 1, 3.
To find:
The y-values for the given x-values in the table.
Solution:
We have,
[tex]y=2x-3[/tex]
At x=-1,
[tex]y=2(-1)-3[/tex]
[tex]y=-2-3[/tex]
[tex]y=-5[/tex]
At x=1,
[tex]y=2(1)-3[/tex]
[tex]y=2-3[/tex]
[tex]y=-1[/tex]
At x=3,
[tex]y=2(3)-3[/tex]
[tex]y6-3[/tex]
[tex]y=3[/tex]
Therefore the required table is:
x y
-1 -5
1 -1
3 3
Lea is making a mosaic picture that is 3/4 foot tall and 11/12 foot wide what is the area of her mosaic
Answer:
First, 3x11 equals 33. Then 4x12 equals 48, so the area would be 4/12
Step-by-step explanation:
What is the size of ABC?
What is an equation of the line that passes through (-2,3) and (6,-1) ?
Answer:
2,7
Step-by-step explanation:
Cody rented a bike from John's Bikes. It
cost $16 plus $4 per hour. If Cody paid
$24, then he rented the bike for how many
hours?
{[3 + 2 - (9 - 7) + (3 + 4)]
Answer:
7
youd do 9-7= 2
3+4= 7
3+2-2+7 is your equation now and you can do this left to right like normal
5-2+7
3+7
Answer:
10
Step-by-step explanation:
The order of operations is applicable in a multip-operations equation. This theorem states the order in which one must do operations in order to get a valid result. Remember the order of operations states;
1) Parenthesis
2) Exponents
3) Multiplication or Division
4) Addition or Subtraction
Solve this equation, keeping the order of operations in mind;
{ [ 3 + 2 - ( 9 - 7 ) + ( 3 + 4 ) ] }
{ [ 3 + 2 - ( 2 ) + ( 7 ) ] }
{ [ 3 + 2 - 2 + 7 ] }
{ [ 5 - 2 + 7 ] }
{ [ 3 + 7 ] }
{ [ 10 ] }
10
The area of a parallelogram is 16 cm. One side Height is 4 cm. What is the length? options are:- 5 cm none of these 4cm 8cm
Answer: 4cm
Step-by-step explanation:
The area of a parallelogram is calculated by multiplying the height by the length:
Area = Height * length
Assume the length is x, substituting values would make the formula:
16 = 4 * x
4x = 16
x = 16/4
x = 4 cm
Answer i will brainlist
Answer:
flour:
20
35
40
liquid:
12
21
24
Step-by-step explanation:
First blank is 12
second blank is 30
3rd blank is 40
Step-by-step explanation:
5 to 3 to get 12 you have to seee how many times you have to multiply 5 by to get 20 in this case it is 4. SO then you multiply 3 by 4 to 12 for liquid. Same steps to get the other answers.
PLS HELP I WILL GIVE BRAINLIEST
Answer:
I think it is the second one i am so so so sorry if it wrong
Step-by-step explanation:
find the measure of all of the angles on the diagram
Answer:
1. 135
2. 45
3. 45
4. 135
5. 135.
6. 45
7. 45
8. 135
Step-by-step explanation:
Is square root of 36 plus 3 a rational or irrational number?
Your answer:
Rational because the square root of 36 is a whole number, and all whole numbers are rational
Rational because the square root of 36 equals 6, 6+3=9, and 9 is a terminating decimal
Irrational because there is a square root symbol in the expression
Irrational because adding a whole number with a square root is impossible
Answer:
The answer is D
Step-by-step explanation:
D
In ΔDEF, the measure of ∠F=90°, the measure of ∠D=39°, and FD = 9.8 feet. Find the length of EF to the nearest tenth of a foot.
Answer:
14.2 ft
Step-by-step explanation:
PLEASE HELP (LOOK AT THE PICTURE)
Which of the equations matches the line shown in the diagram?
A
B)
y=-x-1
C)
D)
Answer:
The answer should be D) y = 5/3x - 1/3
Step-by-step explanation: The slope is positive ruling out the negative slope answers leaving C and D, however D is the only answer to get the y intercept correct.
Rewrite using a single positive exponent
Step-by-step explanation:
[tex] \frac{ {7}^{4} }{7} = {7}^{4 - 1} = {7}^{3} [/tex]
Solve for X. Please help ASAP. I have no idea how to do this and it’s due really soon!!
Answer:
x=4
Step-by-step explanation:
14=3x+2
Move all terms that don't contain x to the right side and solve.
14 NEED HELP ASAP WILL GIVE BRAINLY
Answer:
the answer is 110 just add the different number together in this case... 30 + 80 = 110
Step-by-step explanation:
Answer:
The answer is 110 just add the different number together in this case... 30 + 80 = 110 it so easy
Step-by-step explanation:
20 POINTS ANSWER FAST
If two fractions are proportional, then the cross products are equal.
true or false?
Answer
False
Step-by-step explanation:
Answer:
false
Step-by-step explanation:
u cannot cross multiply when ur adding
I wanna know how to solve
the equation
Answer:
-72=r
Step-by-step explanation:
Hi, can someone help me with my math homework? I just need help with B.
Answer:
8
Step-by-step explanation:
========================================================
Explanation:
Let's convert the mixed number 5 & 1/3 to an improper fraction.
The formula to use is
a & b/c = (a*c + b)/c
So,
a & b/c = (a*c + b)/c
5 & 1/3 = (5*3 + 1)/3
5 & 1/3 = 16/3
Imagine you had 16 pieces of candy, and imagine you wanted to divide that up amongst 3 friends. Each friend would get 15/3 = 5 whole pieces. There would be 1 candy left over. The 5 and 1 help then form the 5 & 1/3. So this is one way to visualize how 5 & 1/3 is the same as 16/3.
Another way to see why this works is to note how 16/3 = 5.333 approximately. The '5' before the decimal point is the whole part of the mixed number 5 & 1/3; the decimal portion 0.333 is the approximate value of the fractional part 1/3.
------------------
The total length of fencing needed is 16/3 yards. Each section is 2/3 of a yard long. Since both denominators are "thirds", we can ignore them. An equivalent problem is this: "He needs 16 yards of fencing and each section is 2 yards long"
Based on the new problem without fractions involved, we can see that he'll need 16/2 = 8 sections in total.
You should find that dividing (16/3) over (2/3) will lead to 8 as well. You could say this:
(16/3) divide (2/3) = (16/3)*(3/2) = (16*3)/(3*2) = 48/6 = 8
-------------------
An alternative method:
Let's start with 2/3 of a yard. That doubles to 4/3 which is the same as 1 & 1/3. Think of it as 4/3 = (3+1)/3 = 3/3+1/3 = 1+1/3 = 1 & 1/3.
Next, we'll double 1 & 1/3 to land on 2 & 2/3. You simply multiply each '1' by 2 to end up with those '2's shown.
Now we'll double 2 & 2/3 like so:
2*(2 & 2/3) = 2*(2 + 2/3) = 4 + 4/3 = 4 + (1+1/3) = 5 + 1/3 = 5 & 1/3
The act of doubling exactly three times leads to us ultimately multiplying by 2*2*2 = 8, so he needs 8 sections that are each 2/3 of a yard long.
-------------------
Whichever method you prefer, the final answer is 8 sections.
Patricia needs to save $20 for a new backpack. She has $5 saved in her bank.
Every week, she earns $2 for delivering the Sunday paper, and each week she
spends $0.50 of her pay on food.
Write an equation that represents the number of weeks it will take Patricia to
save $20.
Please hurry!!
Answer:
y=1.5x+5
Step-by-step explanation:
Solve the system of equations:
[tex]y = 2x[/tex]
[tex]x + y = 9[/tex]
1. (6, 3)
2. (-3, -6)
3. no solution
4. (3, 6)
Answer:
[tex]x + y = 9 \\ x + 2x = 9 \\ 3x = 9 \\ x = \frac{9}{3} \\ x = 3[/tex]
write 4729 correct to the nearest hundred
Answer:
4700
Step-by-step explanation:
4729 - 7 is in place of the hundreds, so cut off the rest and make sure, if needed, to round
Answer:
4700
Step-by-step explanation:
round the number up to the nearest hundred if the last two digits in the number are 50 or above.
round the number down to the nearest hundred if the last two digits in the number are 49 or below.
Malik wanted to give 1/5 of his bag of balloons to each of 3 of his friends. How many of his balloons will he give away?
Answer:
Eh cafe donete mal reo jama kolotake? 24 eh moi -09....? kelare mei osaje.
car`e 3,000 = 2458.0? maro et
Step-by-step explanation:
Someone help me please
Answer:
{11,60,62} could not represent the sides of a right triangle
Tavon has a gift card for $80 that loses $3.50 for each 30-day period it is not used. He has another gift card for $70 that loses $3 for each 30 day period it is not
used
aWrite and solve an equation for the number of 30-day periods until the value of the gift cards will be equal
b. What will the value of each card be when they have equal value?
a. If x is the number of 30-day periods, then the equation can be used to find the number of 30 day periods until the values of the gift cards will be equal.
(Type an equation. Use integers or decimals for any numbers in the equation.)
Answer:
(a). 20 ; (b). $10.00 ;
Step-by-step explanation:
(a). 70 - 3x = 80 - 3.50x
- 3x + 3.50x = 80 - 70
0.5x = 10
x = 10 ÷ 0.5
x = 20 ( 30-day periods )
(b). $70.00 - $3.00(20) = $10.00
The number of days will be 20 days. Then the values of the gift cards will be equal and will be $10.
What is the solution to the equation?The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.
Tavon has a gift card for $80 that loses $3.50 for each 30-day period it is not used. He has another gift card for $70 that loses $3 for each 30 days period it is not used.
Let y be the amount left of gift cards after x days and x be the number of days. Then the equation will be
y = 80 - 3.5x ...1
y = 70 - 3x ...2
From equations 1 and 2, we have
80 - 3.5x = 70 - 3x
0.5x = 10
x = 10 / 0.5
x = 20 days
The values of the gift cards will be equal and will be
y = 80 - 3.5(20)
y = 80 - 70
y = $10
The values of the gift cards will be equal and will be $10.
More about the solution of the equation link is given below.
https://brainly.com/question/545403
#SPJ2
A recipe calls for 1\frac{1}{2}1 1 2 cups of sugar for every 2 eggs. Find the rate of cups of sugar per egg called for by the recipe.
HELP DUE IN 10 MINS! Determine whether the triangle described is right, obtuse, or acute. Show work to justify your answer.
20, 21, 29
This triangle is a obtuse, acute, or right triangle, because blank is ,=, <, >, to blank?
Answer:
Right triangleStep-by-step explanation:
Given 3 side lengths of a triangle.
Let's test if this is right triangle by using Pythagorean theorem:
20² + 21² = 29²400 + 441 = 841841 = 841Yes, the triangle is right
Peter makes strawberry shakes for 6 people. He needs 15 strawberries for this. He has 4/5 of the strawberries. How many more strawberries does he need?
Answer: 3 strawberries
Explanation: 15/5 = 3
3*4=12
15-12=3
help me please, brainliested ;)
Answer:
3/2 the slope is the rate of change
Step-by-step explanation:
URGENT PLEASE !!! answer correctly !!!!! Will be marking Brianliest !!!!!!!!!!!!!!!!
Answer:
B is (-2,-4)
Step-by-step explanation: