Answer:
21 birds and 7 dogs
Step-by-step explanation:
Represent Birds with B and Dogs with D
[tex]B + D = 28[/tex] ----- Total Animals
A bird has 2 legs and a dog has 4, so:
[tex]2B + 4D = 70[/tex] ---- Legs
Required
Solve for D and B
Make D the subject in the first equation
[tex]D = 28 - B[/tex]
Substitute 28 - B for D in the second
[tex]2B + 4(28 - B) = 70[/tex]
[tex]2B + 112 - 4B = 70[/tex]
Collect Like Terms
[tex]2B - 4B = 70 - 112[/tex]
[tex]-2B = -42[/tex]
Solve for B
[tex]B = -42/-2[/tex]
[tex]B = 21[/tex]
Recall that: [tex]D = 28 - B[/tex]
[tex]D = 28 - 21[/tex]
[tex]D = 7[/tex]
Hence, there are 21 birds and 7 dogs
expand and simplify
2(x+7)+ 3(x+1)
Answer:
2(x+7)+3(x+1)
2x+14+3x+3
5x+17
Answer:
Step-by-step explanation
2(x+7)+ 3(x+1)
2x+14+3x+3
5x+17 is the answer
#8 linear inequality in two variables is shown below. -4y <-12. Which
graph would represent the solution set of linear inequality? (SOLVE FOR
Y!)
Can someone help explain it!!!
Answer:
J
Step-by-step explanation:
Step 1: solve for y
Step 2: graph y, use dashed line
Step 3: Shade in solutions, here y>3 so everything bigger then 3 is a solution.
If you subtract a negative number to another negative number do you get a positive answer or negative?
Answer:
Negative
Step-by-step explanation:
Because Depending on which number is the biggest it's negative and the rules say the same signs add different subtract and keep the sign of the bigger number so
positive minus a negative= positive (6-3=3)
negative-positive= negative (-10+5= -5)
Example: What is 6 − (−3)? Yes indeed! Subtracting a negative is the same as adding!
Find the length of segment JK with endpoints J(4, 8) and K(-1, -2). Leave the answer as a radical. Simplify if necessary
Answer:
The length of segment JK is 5[tex]\sqrt{5}[/tex] ⇒ C
Step-by-step explanation:
The formula of the distance between the two points (x1, y1) and (x2, y2) is
d = [tex]\sqrt{(x2-x1)^{2}+(y2-y1)^{2}}[/tex]
Let us use the formula above to solve the question
∵ Jk is a line segment
∵ J = (4, 8) and K = (-1, -2)
∴ x1 = 4 and y1 = 8
∴ x2 = -1 and y2 = -2
→ Substitute them in the formula above
∵ JK = [tex]\sqrt{(-1-4)^{2}+(-2-8)^{2}}[/tex]
∴ JK = [tex]\sqrt{(-5)^{2}+(-10)^{2}}[/tex]
∴ Jk = [tex]\sqrt{25+100}[/tex]
∴ Jk = [tex]\sqrt{125}[/tex]
→ Simplify the root
∵ 125 = 5 × 5 × 5
∴ [tex]\sqrt{125}[/tex] = 5[tex]\sqrt{5}[/tex]
∴ JK = 5[tex]\sqrt{5}[/tex]
∴ The length of segment JK is 5[tex]\sqrt{5}[/tex]
Put these in order starting from the smallest
5^2 2^4 3^3 1^8
Answer:
1^8, 2^4, 5^2, 3^3 is the answer.
The numbers ordered from the smallest to the largest is [tex]1^{8} , 2^{4} , 5^{2} , 3^{3}[/tex].
What is the order of the numbers?In order to determine the order of the numbers, we have to solve for the numbers. The power of a number can be solved by multiplying a number by its number of power.
[tex]5^{2}[/tex] = 5 x 5 = 25
[tex]1^{8}[/tex] = 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 = 1
3³ = 3 x 3 x 3 = 27
[tex]2^{4}[/tex] = 2 x 2 x 2 x 2 = 16
To learn more about perfect squares, please check: https://brainly.com/question/22947195
Gregory sees an $80.00 jacket on sale at 30% off. How much will it cost after a 7% sales tax is applied?
IT'S B
HOPE THIS HELPED MARK ME BRAINLIST PLS HAVE A NICE DAY
3(5 - 2n) + 9n simplified is?
Answer:
5n-2n²
---------- <--- line
3
What is -5 5/8 + 3 1/2
Answer:
-2.125
Step-by-step explanation:
What is the constant of proportionality in the equation y = 0.41x?
Answer:
0.41
Step-by-step explanation:
because its 0.41 it cant be reduced or messed with so your answer is 0.41
Is this a proportional relationship
Answer:
Yes, this is a proportional relationship due to the fact that each total cost divided by the number of downloads are all equal to 3.
Which expression is equivalent to 16a+24b?
Answer:
the anwer is 8
Step-by-step explanation:
ur welcome
helppp
The value -2 is a lower bound for the zeros of the function shown below.
f(x) = 4x^3– 12x^2-x+15
A. True
B. False
What should be subtracted from the following expressions to make perfect square ?
: Question number 1 =
z⁴+z⁴
Answer:
i dont know the answer i just live and only socialize thru brainly and im 67 years old
Step-by-step explanation:
i dont know i dont have a phone i only have a 1972 computer
Simplify the expression:
X^2 (2x + 3)
Answer:
2x^3+3x^2Step-by-step explanation:
x^2(2x+3)=(x^2)(2x+3)=(x^2)(2x)+(x^2)(3)=2x^3+3x^2Answer:
2x³ + 3x²Step-by-step explanation:
1. A line with a slope of 2 passes through (3,-2). Write the equation in Point-Slope Form.
2. A line with a slope of 2 passes through (3,-2). Write the equation in Slope-Intercept Form.
help please i need it
dhhdkhdkjhdkdhkshdksj
Answer:
26 percent sodium
also can i have brainliest please
=1/3(3w - 12)= 1/6( 24-6w)
Answer:
i got you it's w=4
Step-by-step explanation:
2w/2=8/2 your going to divide both sides by 2. simplify that which gives you w=4
Kain graphs the hyperbola (y+2)^2/64 − (x+5)^2/36 = 1 . How does he proceed? Drag a value, phrase, equation, or coordinates in the boxes to correctly complete the statements.
I just took the test
1st Box. (-5,-2)
2nd Box. up and down
3rd Box. 8
4th Box. (-5, 6), (-5,-10)
5th Box. 4/3
6th Box. y+2=+/-4/3(x+5)
Answer:
1st Box. (-5,-2)
2nd Box. up and down
3rd Box. 8
4th Box. (-5, 6), (-5,-10)
5th Box. 4/3
6th Box. y+2=+/-4/3(x+5)
are the correct choices. Here are screenshots for your convenience.
Step-by-step explanation:
Can someone help me pls
Answer:
Step-by-step explanation:
1). ASA postulate of congruence
2). Triangles are congruent.
please help, the brainiest will go to the one with a good answer.
Reduce the following fraction: -36x^4y^4z^5/-12x^6y^3z
A. -3x^2yz^4
B. 3yz^4/1x^2
C. -9yz^5/-3x^2
D. 36yz^5/12x^2
PLEASE ANSWER THIS ASAP !!!!!!
Answer:
Step-by-step explanation:
b
Unit 2 lesson 5 practice problem 3 in math workbook
You get 15 points if you answer this.
Answer:
what do you need help with???
1. The model represents an equation.
Which is the value of x for this equation?
1
X
х
1
х
1
1
1
1
1
1
1
A.X= 2
B.x= 4
C.x= 5
D.x = 6
Answer:
nice avatar and the answer is a
i
Heres a set of data 2.4, 1.6, 3.2, 0.3, 1.5 each peice of data is increases by 10, what is the mean? each new peice of data is doubles, whats the new mean?
Step-by-step explanation:
Mean is the ratio of the sum of the sample data to the total sample size.
1) Given the set of data 2.4, 1.6, 3.2, 0.3, 1.5, if each piece of data is increases by 10, the new data's will be;
(10+2.4), (10+1.6), (10+3.2), (10+0.3), (10+1.5)
sum of the new data's = 59
Sample size = 5
Mean = 59/5
Mean = 11.8
Hence if the price of data is increases by 10, its new mean will be 11.8
2) If each new piece of data is doubles, the new set of data will be;
2(2.4), 2(1.6), 2(3.2), 2(0.3), 2(1.5)
= 4.8, 3.2, 6.4, 0.6, 3.0
Sum of new data = 4.8+3.2+6.4+0.6+3.0
Sum of new data = 18
sample size = 5
Mean = 18/5
Mean = 3.6
Hence the new mean if the data were doubles is 3.6
Mai paid $16 for 4 pumpkin pie slices. How many pumpkin pie slices is that per dollar?
freeeeeeeeeeeeeeeeeeeeeeer pointk
welp thank you for this
Elijah's puppy weighs 35 ounces if he weighed 19 ounces at the last visit to the veterinarian's office what is the percent increase in the puppy's weight rounded to the nearest whole number
Answer:54.29%
Step-by-step explanation:
Study circle C, where diameter AB is perpendicular to chord MN at point O.
The diagram as described in the text.
If MO = 5x − 7 and NO = 18, what is the value of x?
Enter the correct value.
Answer:
5
Step-by-step explanation:
Since a line splitting a chord that goes through the circle and is perpindicular to that chord is always the midpoint.
5x-7 = 18
5x = 25
x = 5
The answer to question and to the value of x is 5
1 1/3 - 2 1/5 + 7/10
Answer:
[tex]-\frac{1}{6}[/tex]Step-by-step explanation:
[tex]1\frac{1}{3} - 2\frac{1}{5} +\frac{7}{10}[/tex]
[tex]=-\frac{13}{15} +\frac{7}{10}[/tex]
[tex]=-\frac{1}{6}[/tex]
One root of is x = 2. What are all the roots of the function? Use the Remainder Theorem. x = 2, x = 3, or x = 4 x = –2, x = –3, or x = –4 x = 1, x = 2, x = 3, or x = 13 x = –1, x = –2, x = –3, or x = –13
Answer:
A. x = 2, x = 3, or x = 4
I got 100%
Answer:
A
Step-by-step explanation:
Because the guy above me is correct