Lisa bought 16 1/2 pounds of sand for her
child’s sandbox she was building. What is
this in ounces?
Sec x -tan x sin x =1/secx
Help me prove it
Answer:
L.H.S. = [tex]\frac{1}{cosx} -\frac{sinx}{cosx}sinx[/tex]
= [tex]\frac{1}{cosx} - \frac{sin^2x}{cosx}[/tex]
= [tex]\frac{1-sin^x}{cosx} = \frac{cos^2x}{cos x}[/tex]
= cos x = 1/secx
Step-by-step explanation:
Hey there!
Given;
sec x - tan x . sin x = 1/(sec x).
~ Taking LHS.
= sec x - tan x . sin x
= 1/(cos x) - (sin x/cos x) . sin x { Using formula sec x = 1/cos x and tan x = (sin x/cos x)}
~ Multiply (sin x) and (sin x).
[tex] = \frac{1 - { (\sin(x) )}^{2} }{ \cos(x) } [/tex]
~ Use formula 1-sin²x= cos²x
[tex] = \frac{ {cos}^{2} x}{ \cos(x) } [/tex]
~ Cancel cos x.
= cos x
= 1/sec x { cos x = 1/sec x}
→ RHS proved.
Hope it helps.....
In the mid term test Jesse scored 92%,89% and 90%.What was her main score
Answer:
100%
Step-by-step explanation:
Answer:
90.3%
Step-by-step explanation:
I think you have a typo. I'm pretty sure you meant mean score. To find the mean, we add up all the values and divide by the number of values. Let's add 92, 89, and 90. That gets us 271. Now, let's divide 271 by 3. That gets us 90.3. That means Jesse's mean score is 90.3%.
WHATS 10/7 divided by 4
Answer:
10/28
Step-by-step explanation:
Which expression is equivalent to -21/4/-2/3
Answer:
ummmmmmm
Step-by-step explanation:
c
Jacob won 62 super bouncy balls playing
horseshoes at the county fair. At school he
gave two to every student in his math class. He only has 2 remaining. How
many students are in his class?
Answer:
30
Step-by-step explanation:
62 = 2x + 2
62 - 2 = 2x
60 = 2x
x = 30
PLEASE HELP ME IN SUPER CONFUSED!
Represent the following sentence as an algebraic expression, where "a
number" is the letter x. You do not need to simplify.
Twice the difference of a number and 3.
Answer:
x-3*2
Step-by-step explanation:
HELPP this hard IMAO
Answer: The answer is 50.24 SQAURE INCHES.
Step-by-step explanation: So this circle is even. 8 up and down. * to the right and left. Now the area needs to be found. If the diameter is 8 inches, your answer should be 50.24 SQUARE INCHES.
Jennifer deposits $80 into an investment account with a rate of 4%, compounded annually. The equation y = 80(1 + 0.04)x can be used to determine the number of years, x, it takes for Jennifer’s balance to reach a certain amount of money, y. Jennifer graphs the relationship between time and money. What is the y-intercept of Jennifer’s graph?
(0, 80)
(0, 0)
(80, 80)
(80, 0)
Answer:the answer is A: (0,80)
Step-by-step explanation:
3d - 5+4d +5=140 how do i solve this i need help
Answer:
3
−
5
+
4
+
5
=
1
4
0
3d{\color{#c92786}{-5}}+4d+{\color{#c92786}{5}}=140
3d−5+4d+5=140
3
+
4
=
1
4
0
3d+4d=140
3d+4d=140
2
Combine like terms
3
+
4
=
1
4
0
{\color{#c92786}{3d}}+{\color{#c92786}{4d}}=140
3d+4d=140
7
=
1
4
0
{\color{#c92786}{7d}}=140
7d=140
3
Divide both sides of the equation by the same term
7
=
1
4
0
7d=140
7d=140
7
7
=
1
4
0
7
\frac{7d}{{\color{#c92786}{7}}}=\frac{140}{{\color{#c92786}{7}}}
77d=7140
4
Simplify
Cancel terms that are in both the numerator and denominator
Divide the numbers
=
2
0
d=20
d=20
Solution
=
2
0
hope it help
Step-by-step explanation:
Answer:
the answer is 20
Step-by-step explanation: combine like terms
7d = 140
then divide
140/7
20
How many people will 1 cup of rice serve?
Answer:
4
Step-by-step explanation:
Answer:
it will serve 3 people!
Step-by-step explanation:
divide 6 by 2!
hope this helped!
for brainliest!
Evaluate -x+23y if x=9 and y=2
Answer:
The answer is 37
PLEASE ANSWER ASSAP!!!!!!!!!!!!!!!! WILL GIVE BRAINLEST!!!!!!!!!!!!!!!!!!!
Answer:B
Step-by-step explanation:
Vertical angles are equal, so 4x - 20 = 60
ANSWER WUICK WILL.MARK BRANLIEST The ratio of North American Butterflies to South American butterflies at a butterfly park is 8:5. The ratio of
South American butterflies to European butterflies is 5:2. There are 80 North American butterflies at the
butterfly park.
How many european butterflies are there
Answer:
20 butterflies
Step-by-step explanation:
80:50=8:5
50:20= 5:2
20 european butterflies
-2(7-15)
What is the value of
?
4
O 4
0 -2
O 2
O 4
The dimensions of a drawer are:
height = 2x + 3 inches, length 52 + 2 inches and
width 3x – 2 inches. What is the volume of the drawer?
Answer:
Hope you find the help you need on this sorry , i couldnt find the answer :( good luck !!
Step-by-step explanation:
What is the sum of 9.37- 6
The length of a football playing field is 100 yards between the opposing goal lines. What is the length of the football field in feet? Use the conversion equivalency of 3 feet = 1 yard.
a.
33.3 feet
b.
300 feet
c.
200 feet
d.
600 feet
Answer:
33.3
Step-by-step explanation:
100 divided by 3
Please Help, and say where u got your answer from?
How does Washington’s request foreshadow a power shift within the American colonies?
Answer:
Having done everything in his power to secure American independence, Washington decided to retire “from all public employments” after the war. He found true peace back at Mount Vernon and was happy to “move gently down the stream of life until I sleep with my fathers.” Washington’s joyful retirement was interrupted in 1787 when his country called on him again.
Step-by-step explanation:
A line passes through (-6, 10) and (4, -10). What is the slope?
F(x)=x-7
What is the value of x when f(×) =3
Answer:
3= x - 7 (write out the equation and think of what number with 7 subtracted would be equal to 3)
3= 10-7 (10-7 is equal to three, so that's what x has to be)
x=10
Step-by-step explanation:
Please help me with this question
Answer:
The answer would be C
Step-by-step explanation:
The reason it is C, is because, if you add 13 to 3, you would get 16. Then, by dividing that by 2, you would get the desired answer of 8.
Answer:
c
Step-by-step explanation:
I just know because I worked it out on paper
For integers a, b and k, we know that a >12, b > 20 and a < b. If b=7k, what is the value of k ?
This question is incomplete, the complete question is;
For integers a, b and k, we know that a > 12, b < 20 and a < b. If b=7k, what is the value of k ?
Answer: the value of k = 2
Step-by-step explanation:
Given that;
a > 12
b < 20
a < b
If b = 7k
Now if k = 1 {b = 7k = 7}
b would be equal to 7 but b has to be greater than 20
IT CANT BE
if k = 2 { b = 7k = 14}
b would be equal to 14, a is greater than 12, b has to be less than b; 14 < 20,
a has to be less than than b ( 12 < 14 )
IT IS
if k = 3 {b = 7k = 21}
b would be equal to 21, so b is greater than 20 and a is less than 21
IT CANT BE
Therefore the value of k = 2
Pam walks 7/8 of a mile to school. Paul walks 1/2 of a mile to school. How much
farther does Pam walk than Paul?
Answer:
Pam walks 3/8 of a mile more than Paul
Step-by-step explanation:
1/2 = 4/8
7/8 - 4/8 = 3/8
Assuming the lines are evenly spaced between the integers, what number, in decimal notation, is represented by the plotted point?
Answer:
-1.4
Step-by-step explanation:
There are five increments between -2 and -1, so we find the difference between -2 and -1, which is 1. Divide 1 by five (increments)=.2
This means that every increment is worth 0.2.
If we see it from the left to right, from -2, there are 3 increments to the right, so multiply three by 0.2 which is 0.6, add 0.6 to -2, which is -1.4.
Hope this helps!
In a survey, 48% of the people questioned said they watch sports on television. Were there more people who said they watch sports or more who said they do not?
Answer:
more people said they do not watch sports
Step-by-step explanation:
Becasue 52 percent say they dont watch
3 There are 5 times as many boys as girls in a school.
Together the school has 810 pupils.
How many boys are there?
Answer:
Number of boys = 675
Step-by-step explanation:
Given that:
There are 5 times as many boys as girls in a school.
Number of pupils in school = 810
Let,
x be the number of girls
y be the number of boys
According to given statement;
x+y=810 Eqn 1
y = 5x Eqn 2
Putting y=5x in the Eqn 1
x+5x=810
6x=810
Dividing both sides by 6
[tex]\frac{6x}{6}=\frac{810}{6}\\x=135[/tex]
Putting x=135 in Eqn 2
y = 5(135)
y = 675
Hence,
Number of boys = 675
Hi please help me answer this :)
Explain answer
Will give braisnlt
Answer:
No solutions
Step-by-step explanation:
No intersections or points that apply for the equations.
can you find the value x in the f figure
Answer:
[tex]x =[/tex] [tex]16\frac{2}{11}[/tex]
Step-by-step explanation:
According to the image, those are verticle angles, so I came up with this equation that can help me solve this problem:
5x+12+6x-10=180
11x+2=180
11x=178
x=[tex]16\frac{2}{11}[/tex]
x2 - 4x + y2 - 21 = 0 The equation in standard form is
