plz answer. Its urgent. thanks
Answer:
[tex] a = \dfrac{5}{18} [/tex]
[tex]b = -\dfrac{1}{18}[/tex]
Step-by-step explanation:
You need to rationalize the fraction.
[tex] \dfrac{1}{5 + \sqrt{7}} = a + b\sqrt{7} [/tex]
[tex] \dfrac{1}{5 + \sqrt{7}} \times \dfrac{5 - \sqrt{7}}{5 - \sqrt{7}} = a + b\sqrt{7} [/tex]
[tex] \dfrac{5 - \sqrt{7}}{25 - 7} = a + b\sqrt{7} [/tex]
[tex] \dfrac{5 - \sqrt{7}}{18} = a + b\sqrt{7} [/tex]
[tex] \dfrac{5}{18} - \dfrac{1}{18}\sqrt{7} = a + b\sqrt{7} [/tex]
[tex] a = \dfrac{5}{18} [/tex]
[tex]b = -\dfrac{1}{18}[/tex]
- 7r - 3r - 8 = 24.
Answer:
24
Step-by-step explanation:
urgent solve 5( x- 2 )=35
Step-by-step explanation:
5x-10=35
5x=35+10
5x=45
5x/5=45/5
x=9
what is the proportion of 3 over 7 =n over 28
simplify this please (45)(26)
Answer:
1170
Step-by-step explanation:
45 times 26
Answer:
1170
45x26=1170
Sam and Adam share some money in the ratio 2 : 5.
Adam got £12 more than Sam.
Work out how much money Sam received.
Answer:
£8
Step-by-step explanation:
A
Sam:Adam
2:5
3=£12
12÷3=4
1=4
4×2=8
sam=£8
HELP ILL MARK YOU BRAINLIST
ACTIVITY SET A
Solve the following problem. Write your an ver at the back
1. 12 flowers to 3 vases. How many flower to 6 vases?
2. 5 books for every 3 pupus. How many books for 9 pupils?
3. The salary of two workers is in the ratio 3:4. They received P 14 70C. How mut tid
each worker received?
4. The ratio of men to women at college is 6 is to 8 How many women students are there if there are 300 men?
5. Mr Reyes has enough money to pay 8 workers for 15 days. If he adds 4 meters,
for how many long can be pay them at the same rate?
pls help I really need answer
Answer:
1-24
2-15 books for 9 pupils
3-Worker 1
3x = 3(1,750)
= 5,250
-------------------
Worker 2
4x = 4(1,750)
= 7,000
4-368
5-22 days and a half (22.5 days)
Step-by-step explanation:
hope this helps if u need the calclations tell me!
i need help with this
What is the slope of this line?
Answer:
3/4
Step-by-step explanation:
Gradient=6/8=3/4
Very confused on how to get the inside variables
help for my assighnment thanks
Answer:
D
Step-by-step explanation:
Answer:
B and D
Step-by-step explanation:
Just trust me
How do you write 0.15 as a percentage
Answer:
15%
Step-by-step explanation:
move the decimal 2 places because you're dividing by 10
Help!
Which functions graph is shown below?
Answer:
Sin x so A
Step-by-step explanation:
Please give me brainliest pls. Im begging you I helped.
Jose brought 9 pounds of rice for $4. How many pounds of rice did he get per dollar?
Answer:
1.5 pound ever dollar
Step-by-step explanation:
just calculate
Answer:
2.25 answer
Step-by-step explanation:
9÷4=2.25answer thanks
What is x?
-4x-2 /3=(-6)
Answer:
4/3
Step-by-step explanation:
Answer:
x= 4
Step-by-step explanation:
-4x-2 /3=(-6)
-4x-2= 3 (-6)
-4x-2=-18
-4x=-18+2
-4x=-16
x=-16/-4 = 16/4 = 4
In systems by substitution what is y=x+8 and x+y=2
Answer:
x = -3
Step-by-step explanation:
y = x + 8 and x + y = 2
Using substitution, we know that y = x + 8, so:
x + y = 2
x + (x + 8) = 2
2x + 8 = 2
2x = -6
x = -3
Then we solve for y:
x + y = 2
-3 + y = 2
y = 2 + 3
y = 5
In which table is y a linear function of x?
X
0
1
4
5
A
8
y
0
5
96
-9
-12
X
0
1
2.
3
4
B В
y
0
7
12
15
16
x
1
0
1
M
©
у
6
8
10
12
14
х
1
1
N
3
4
5
D
32
16
у
4
8
2.
Answer:
ur answer should be C. But I'm not really sure..
The table in which y is a linear function of x is; Choice C
Linear functionsAccording to the question;
We are required to identify in what table y is a linear function of x.The slope of a linear function is always constant.
Hence, By observing the table in Choice C;
Slope = (8-6)/(0-(-1)) = (10-8)/(1-0) = 2.
Hence, since slope of the function is constant, the required table is: Choice C.
Read more on linear function;
https://brainly.com/question/24502219
Very urgent. Please help
Answer:
(2) 68°
Step-by-step explanation:
Since the required m angle B = 68°
A number plus five is eighteen.
Answer:
n = 13
Step-by-step explanation:
n + 5 = 18
Answer:
13
Step-by-step explanation:
To find the number, subtract 5 from 18:
18 - 5
= 13
So, the number is 13.
Which of the following shapes is a convex nonagon?
OA)
OB)
OC)
OD)
It is asking for a convex nonagon, not a convex polygon. So in this case we are looking for a shape with 9 straight lines and 9 angles. Which means we can cross A out.
Now we need to look at which nonagon is a convex nonagon which means that we are looking for the shape having only interior angles measuring less than 180°. So this means that B and D can be crossed out.
Thus, the answer is C.
P.S. If you find my answer helpful, please mark me brainiest!
A school orders 25 desks for each classroom,
plus 30 spare desks. The total number ordered
as a function of the number of classrooms is shown
in the graph.
Write the equation represented by the graph
Helllppppppppppp pllzlzlzllzlz check the picc
Answer:
[tex]Rx=1(p) = (4,7)[/tex]
Step-by-step explanation:
he given point P has coordinates, [tex](-2,7)[/tex] We want to find the image of this point, after a reflection in the line [tex]x=1[/tex]
3. Find the height of rectangle with area (2x^2-9x+9) ft^2 and width (2x-3) ft
Answer:
The height of the area is (x - 3) ft.
Step-by-step explanation:
You can do this a few ways. You could use long division to divide the area by the width, or you could just factor the area, which is guaranteed to have the width as a factor, leaving you with the height.
Let's go with factoring, as that's probably what this question is intended as:
[tex]= \frac{2x^2 - 9x + 9}{2x - 3} \\\\= \frac{2x^2 - 6x - 3x + 9}{2x - 3} \\\\= \frac{2x(x - 3) - 3(x - 3)}{2x - 3} \\\\= \frac{(2x - 3)(x - 3)}{2x - 3} \\\\= x - 3[/tex]
Does anyone know this question!??
Answer:
£213110.48
Step-by-step explanation:
Principal= 200000
Rate = 1.6%
Time = 4 yrs
Amount
= P(1+1.6/100)⁴
=200000(101.6/100)⁴
= 213110.489
= £213110.48
XYZ will be translated so that the coordinates of X are (5,11)
Answer: B
Step-by-step explanation:
Peter scored 27 out of 50 in a test. What percent was that? *
-13.5%
-27%
-50%
-54%
Answer:
54% for sure please give me brainliest
Answer:
54%
Step-by-step explanation:
27/50 = 54/100 (multiply the full score untill it is at 100, the use the same number it took for that and multiply the points)
ANSWER THIS PLZZZZZZ
Answer:
dude all you have to do is add it up its A or B
Answer:
E
Step-by-step explanation:
Hello Miss!! I hope you are doing well.Ms.Sawsan are my answers correct here or is there something I need to change?
Is the product of greater or less than ? Is it
easier to compare the product to using the number
line or area model? Explain.
5
8
Answer:
3/5 x 5/8 is less 5/8
Step-by-step explanation:
3/5 x 5/8 = 15/40
Simply
15/40 = 3/8
•
5/8 > 3/8
