1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valkas [14]
4 years ago
9

20 points, please help

Mathematics
1 answer:
Damm [24]4 years ago
7 0

Answer:

The answer to your question is:    83 + 6\sqrt{35}

Step-by-step explanation:

This is a square of a binomial.

                                  (2\sqrt{5} + 3\sqrt{7} )^{2}

1.- Square of the first term

                               ( 2\sqrt{5} )^{2} = 4(5) = 20

2.- Twice the product of the two terms

               (2)(2\sqrt{5} )(3\sqrt{7} ) = 6\sqrt{35}

3.- Square of the second term

                              (3\sqrt{7)})^{2} = 9(7) = 63

4.- Write the solution

                           20 + 6\sqrt{35} + 63

                            83 + 6\sqrt{35}

You might be interested in
What is the sum of the first 7 terms of the geometric series:<br><br> -8 + (-4) + (-2) + 1 + 1/2+...
s2008m [1.1K]
a_1=-8;\ a_2=-4;\ r=a_2:a_1\to r=-4:(-8)=\dfrac{1}{2};\ n=7\\\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\subtitute:\\\\S_7=\dfrac{-8\left[1-\left(\dfrac{1}{2}\right)^7\right]}{1-\dfrac{1}{2}}=\dfrac{-8\left(1-\dfrac{1}{128}\right)}{\dfrac{1}{2}}\\\\=\dfrac{-8\cdot\dfrac{127}{128}}{\dfrac{1}{2}}=-\dfrac{127}{16}\cdot\dfrac{2}{1}=-\dfrac{127}{8}=-15\dfrac{7}{8}
4 0
4 years ago
Miller has a painting that is 4 ft by 8 ft. What will the dimensions of the painting be if he scales it down by a factor of one-
natta225 [31]
The answer is C) 1 ft by 2 ft
You can take 4*0.25 and 8*0.25
You end up with 1 by 2
8 0
4 years ago
Read 2 more answers
Jeff rents a truck. the truck rental place charges$38 per day plus $0.25 per mile to rent the truck. how many miles can Jeff tra
jolli1 [7]
Im pretty sure he can travel 800 miles not counting the truck rental fee. Im not 100% sure though.

Hope this helps!
3 0
3 years ago
Read 2 more answers
If log2 5 = a, log2 3 = b and log2 7 = c, determine an expression for log2 (25/21) in terms of a, b, and c
Ilia_Sergeevich [38]

Answer:

2a - b -c

Step-by-step explanation: We know that:

log_{2} 5 = a\\log_{2} 3 = b\\log_2 7 = c\\

and we want:

log_2 \frac{25}{21}.

We can form the numerator using just the first fact (since 5^2 is 25) and the denominator using the latter two (since 3*7 = 21).

log_2 \frac{25}{21} = log_2 \frac{5^2}{3*7}.

The logarithm of a division can be expanded by subtracting the numerator and denominator (while still keeping the log). The logarithm of a product can be expanded by adding the terms while keeping the log. If the logarithm is raised to a power, we can bring it down as a factor:

log_2 \frac{5^2}{3*7} = log_2(5)^2 - log_2 (3*7) = 2 log_2(5) - (log_2 3 + log_2 7)

= 2 log_2(5) - log_2 3 - log_2 7 .

Substituting the variables:

2 log_2(5) - log_2 3 - log_2 7 = 2a - b - c

8 0
3 years ago
A kite is flying at an attitude of 12 yd. If
Molodets [167]

Answer:

576 inches long Pls mark me brainliest

6 0
3 years ago
Other questions:
  • Solve 5/4=y-1/4 Please Help!!!
    11·2 answers
  • A snow cone cup at the County Fair is 15 cm tall and has a diameter of 8 cm. If the cup is filled just to the top, what is the v
    7·1 answer
  • Express this number in scientific notation. 0.0008235
    15·1 answer
  • Plz help me its very confusing I need help plz can u help
    10·1 answer
  • What is the percent increase from 65.6 to 82.2?
    10·2 answers
  • Red is a very popular car color. A production company manufactures cars and parks them in
    8·1 answer
  • Help this is confusing
    13·1 answer
  • What is 8/15 times -2/3??
    8·2 answers
  • FINDING ZEROESSSSSSS PLZZZZ HELP
    8·2 answers
  • There is a bag of 50 marbles.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!