Answer:
[tex]\lambda=10^{-10}\ m[/tex]
Step-by-step explanation:
Given that,
The frequency of x-rays, [tex]f=3\times 10^{18}\ Hz[/tex]
We need to find the wavelength for x-rays. The relation between wavelength, frequency and speed of light is given by :
[tex]v=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^{8}}{3\times 10^{18}}\\\\=10^{-10}\ m[/tex]
So, the wavelength for x-rays is [tex]10^{-10}\ m[/tex].
Answer:
1x 10-10 m
Step-by-step explanation:
Lower bound of 19.4mm??
Answer:
19.35?
Step-by-step explanation:
Factor completely: 16x^2 - 4
Step-by-step explanation:
16x^2 - 4
4(4x²-1)
4((2x)²-1²)
4(2x+1)(2x-1)
Answer should be,
4(2x + 1)2
Hope this helps! Good luck!
If I make 10$ for working 6 hours if I wanted to make 8$ how many hours do I have to work
Answer:
4.8 hours
Step-by-step explanation:
6=10$
divide by 10
0.6=1$
multiply by 8
4.8=8$
Answer:
4.8
Step-by-step explanation:
Well, if you work for 6 hours, and earn 10$, then, you are earning 10/6$ per hour. So, we can estanblish the equation:
10/6$ * x hours = 8$.
x = 4.8 hours.
Today, everything at a store is on sale. The store offers a 20% discount. The regular price of a t- shirt is 24$ what is the discount
Answer:
The cost of the t-shirt would be $19.20 with a 20% discount and the amount discounted is $4.80
Step-by-step explanation:
24*0.8 = $19.20
Answer:
Step-by-step explanation:
The discount is:
price × discount
We can substitute the discount of 20% for 0.2 and multiply to find the amount of money taken away which gives us the remaining amount or the amount you pay.
$19.20
Find the sixth term of the geometric sequence with a first term of 9 and common ratio of 2
════════ ∘◦❁◦∘ ════════
Answer = 288════════════════════
KnownU1 = 9
r = 2
════════════════════
QuestionU6 = ?
════════════════════
Way to do[tex]un = a(r {)}^{n - 1} [/tex]
[tex]u6= 9(2 {)}^{6 - 1} [/tex]
[tex]u6 = 9( {2}^{5} )[/tex]
[tex]u6 = 9(32)[/tex]
[tex]u6 = 288[/tex]
════════════════════
Notes• Formula of geometric sequence
[tex]\boxed{\ un = a( {r)}^{n - 1}} [/tex]
• Meaning
Un = nth term
a = 1st term
r = ratio
════════════════════
What is the slope of the line that passes through (3,3) (7,6)?
Answer:
3/4 i think
Step-by-step explanation:
Answer:
0.75
Step-by-step explanation:
slope=(y_2-y_1)/(x_2-x_1)
slope=(6-3)/(7-3)
slope=(3)/(4)
slope=0.75
en este caso hay dos expresiones algebraicas equivalentes que representen el área del círculo Cuáles son las esas expresiones equivalentes a 153.86
Answer:
I don't speak Spanish so sorry can't help
7b) A recipe for salad dressing calls for 3 tablespoons of oil for every 2 tablespoons of
vinegar. The line represents the relationship between the amount of oil and the amount of
vinegar needed to make salad dressing according to this recipe. The point (1,1.5) is on the
line.
In the box below, write an equation that represents the relationship between oil (o) and vinegar (V)
Explain the meaning of the point (1,1.5).
Answer:
the meaning of 1, 1.5 is that 1.5 is the oil sad and the 1 is the vinegar.
Step-by-step explanation:
At a sale this week, a suit is being sold for $663. This is a 15% discount from the original price.
What is the original price?
Answer:
563.55
Step-by-step explanation:
85/100*663=563.55
PLEASE HELP An algebraic ___ is a mathematical phrase
With numbers, variables, operations for days.
is it coefficient , expression or evaluate
Answer: I think its, Algebraic expression
Step-by-step explanation:
A mathematical phrase involving at least one variable and sometimes numbers and operation symbols.
Answer:
The answer to this question is algebraic expression.
Step-by-step explanation:
Got it right on edge 2020!!!
Hope this helps!!!
Complete the square to solve 3x2 + 12x = 9.
O A. x=2+1
O B. %= 3 + 6
OC. X=-2+
O D.%-
D. x=-2 + 13
Answer:
C) x = -2 ± [tex]\sqrt{7}[/tex]
Step-by-step explanation:
3x² + 12x - 9 = 0
divide through by 3
x² + 4x - 3 = 0
add 3 to each side
x² + 4x = 3
divide 4 in half and square it; add it to each side of equation
x² + 4x + 4 = 3 + 4
(x + 2)² = 7
x + 2 = [tex]\sqrt{7}[/tex]
x = -2 ± [tex]\sqrt{7}[/tex]
I need this help me please
Try asking your teacher's different methods!! Best of luck!
this is a self evaluation thing because j want to get better at math
Answer:
SAS for similarity
Step-by-step explanation:
I can tell you from this is that ∠TUS ≅ ∠WUV, because they are vertical angles.
The triangles cant be congruent by SSS, SAS, or ASA because the sides are not equal.
However, they are similar because 45/15 = 3 and 36/12 = 3. That would be the SAS for similarity.
An employee plays $75 towards health insurance, while the employer pays $350. What is the ratio of the employers contribution to the employees contribution?
Answer:
350:75?
fraction form: 350/70
Step-by-step explanation:
Y= 5x+3 find the slope m=
Answer:
m = 5
Step-by-step explanation:
.........................
Krisa divides a number by 10. Then she divides the same number by 50. Which quotient is greater? How can you tell?
Step-by-step explanation:
the quotient of 10 is bigger than the quotient of 50
The quotient is greater when number is divided by 10.
What is division?The division is the process of repetitive subtraction. It is the inverse of the multiplication operation. It is defined as the act of forming equal groups.
Given,
Krisa divides a number by 10
Let the number be x
x/10 = y
x = 10y ------(1)
Same number is divided by 50
x/50 = z
x = 50z --------(2)
By equation (1) and (2)
10y = 50z
y = (50/10)z
y = 5z
⇒ y > z
Hence, quotient when number divided by 10 is greater.
Learn more about division here:
https://brainly.com/question/16134410
#SPJ5
What is -6(4x+2) in math?
Can someone please do this!! I need the work done with it !:( it’s due tonight
HELP FAST!!!!
A software designer is mapping the streets for a new racing game. All of the streets are depicted as either perpendicular or parallel lines. The equation of the lane passing through A and B is -7x + 3y = -21.5. What is the equation of the central street PQ?
A. -3x + 4y = 3
B. -1.5x − 3.5y = -31.5
C. 2x + y = 20
D. -2.25x + y = -9.75
Answer:
[tex]-1.5x - 3.5y =- 31.5[/tex]
Step-by-step explanation:
Given
AB: [tex]-7x + 3y = -21.5[/tex]
[tex]PQ(x_1,y_1) = (7,6)[/tex]
Required
Determine the equation of PQ
First, we calculate the slope of AB:
[tex]-7x + 3y = -21.5[/tex]
Make 3y the subject
[tex]3y = 7x - 21.5[/tex]
Make y the subject
[tex]y = \frac{7}{3}x - \frac{21.5}{3}[/tex]
An equation has the general form:
[tex]y = mx + b[/tex]
Where m = slope
So:
[tex]m = \frac{7}{3}[/tex] -- Slope of AB
From the attached diagram, we can see that PQ is perpendicular to AB.
This means that, the relationship between their slope is:
[tex]m_2 = -\frac{1}{m_1}[/tex]
Substitute 7/3 for m1
[tex]m_2 = -\frac{1}{7/3}[/tex]
[tex]m_2 = -\frac{3}{7}[/tex]
The equation of PQ is then calculated as:
[tex]y - y_1 = m(x - x_1)[/tex]
Where
[tex]m = m_2 = -\frac{3}{7}[/tex]
and
[tex]PQ(x_1,y_1) = (7,6)[/tex]
So, we have:
[tex]y - 6 = -\frac{3}{7}(x - 7)[/tex]
Multiply both sides by 7
[tex]7(y - 6) = -\frac{3}{7}(x - 7)*7[/tex]
[tex]7y - 42 = -3(x-7)[/tex]
Open bracket
[tex]7y - 42 = -3x + 21[/tex]
Collect Like Terms
[tex]3x + 7y = 42 + 21[/tex]
[tex]3x + 7y = 63[/tex]
Divide through by -1/2
[tex]-\frac{1}{2}(3x + 7y) = -\frac{1}{2}*63[/tex]
[tex]-1.5x - 3.5y =- 31.5[/tex]
The equation of PQ is: [tex]-1.5x - 3.5y =- 31.5[/tex]
Answer:
B. -1.5x − 3.5y = -31.5
Step-by-step explanation:
Got it right on the test. ; )
What is the perimeter of a rectangle which measures 300m long and 78m 60 cm wide?
Answer:
75720cm or 757.2m
Step-by-step explanation:
300m = 30000cm
78m & 60cm=7860cm
perimeter of rectangle = 2(length) + 2(width)
2(30000) + 2(7860) = 75720cm or 757.2m
Which equation means the same as two more than the number of
apples is 5?
Group of answer choices
A. 2 + 5 = a
B. 2(a + 5) = 10
C. 2a + 5 = 5
D. a + 2 = 5
Answer:
D. a + 2 = 5
Step-by-step explanation:
apples + 2 more = 5 total
Pls help me I need this stuff
Answer:
question 5) 43
question 6) 38
question 3) 107
question 4) 82
Step-by-step explanation:
question 5 and 6 add up to 90 so 90-47=43
and questions 3 and 4 add up to 180 so, 180-73=107
qnd 52+46 =98 so 180-98=82
Answer the following equation: d(-4) = 32
Answer:
d=-8
Step-by-step explanation:
-8 × -4=+32 ....always remember a positive number and negative number equals a negative number and negative number times a negative number is a positive number
Answer:
-8
Step-by-step explanation:
Helppp plzzzzzzzzzzzzzz
Answer:
equivalent
Step-by-step explanation:
i just know
Mrs. Wicker bought a case of 24 juice boxes for $12. How much did each box of juice cost?
Answer:
If 24 juice boxes=12$
Then one box=24÷12=2
One box is 2$
Step-by-step explanation:
:)
Which system of inequalities describes the graph?
PLEASE HELP! BRAINLIEST IF YOU RESPOND WITH CORRECT ANSWER!
Answer:
The answer is A
Step-by-step explanation:
Happy valentines
Answer:
Choice 2
Step-by-step explanation:
The downward sloping line has a y intercept of +1 and a slope of -2, hence its equation is y=-2x+1. Since the shaded region includes some points on the line and above the line, we know that the relation must be >=. Thus, one of the inequalities must be
y>=-2x+1
The upward sloping line has a y intercept of -2 and a slope of +1, hence its equation is y=x-2. Since the shaded region includes some points on the line and below the line, we know that the relation must be <=. Thus, the other inequality must be
y<=x-2
Write a system of linear inequalities so the points (1, 2) and (4, −3) are solutions of the system, but the point (−2, 8) is not a solution of the system. PLEASE SOMEONE HELP AND SOLVE IT AS A SYSTEM OF LINEAR EQUATIONS
Answer:
The sample system is given below:
y < 5 y > x - 8see the attached for the graph
The points (1, 2) and (4, -3) are in the intersected region but the point (-2, 8) is outside
The easy way to get the inequalities to plot the points and add lines to divide the regions where desired point are inside and not required point is outside. I put y = 5 and y = x - 8 lines and shaded the region below y = 5 line and above the other line.Helppp MEEEEEEE!!!!! what is 3(-2)-15+2=
And plzzzzzzzz show your work
Answer:
Step-by-step explanation:
3(-2)-15+2 = -6-15+2 = -21+2 = -19
Answer: -19
Step-by-step explanation:
3(-2)-15+2
Multiply the 3 and -2 because of the parenthesis first:-6-15+2
Next just put the negative numbers together:-21+2
Then just do -21+2=-19
(Click on the picture)
Factorize
2(x+y) ²+9 (x+y)+7
Answer:
(2x+2y+7)(x+y+7)
Step-by-step explanation:
I suspect this is what you are expected to do.
Define z=x+y
2z^2+9z+7
2z^2+2z+7z+7
2z(z+1)+7(z+1)
(2z+7)(z+1)
(2x+2y+7)(x+y+7)