Answer:
=-26
Step-by-step explanation:
f(n) = 7n – 5
Let n = -3
f(-3) = 7*(-3) – 5
Multiply first
= -21-5
=-26
[(x(exponent)2 times y) - 2z] divided by 4. x=12, y=8, z=6.
9514 1404 393
Answer:
285
Step-by-step explanation:
Put the numbers where the variables are and do the arithmetic.
[tex]\dfrac{x^2y-2z}{4}=\dfrac{12^2\cdot8-2\cdot6}{4}=\dfrac{144\cdot8-2\cdot6}{4}\\\\=\dfrac{1152-12}{4}=\dfrac{1140}{4}=\boxed{285}[/tex]
For this item, any non-integer answer should be entered as a decimal, rounded to the hundredths place.
Triangle ABC has coordinates A(-4,1), B(0,-2),and C(4,1).
The perimeter of ∆ABC is ___ units.
9514 1404 393
Answer:
18 units
Step-by-step explanation:
The distance formula is used to find the distance between two points:
d = √((x2 -x1)² +(y2 -y1)²)
For AB, the distance is ...
d = √((0 -(-4))² +(-2 -1)²) = √(16 +9) = √25 = 5
The distances between the other pairs of points can be found the same way. We have elected to let a spreadsheet do the math. It tells us the perimeter of triangle ABC is 18 units.
Answer: 18 units
Step-by-step explanation:
Write the solution to the given inequality in interval notation. -
Answer:
Step-by-step explanation:
(-∝;2)
Answer: (-infinity, 2]
Step-by-step explanation:
Josef has $300 to spend. Which inequality could help him find the maximum number of gifts, x, he could buy if he needs $215 to fix his car and then wants to spend $15 on each gift?
Answer:
x = (300 - 215)/15
Step-by-step explanation:
x, the amount of gifts, is equal to the amount of money left over after he fixes his car, divided by the amount he's willing to spend on each gift.
josef could buy a maximum of 5 gifts! the answer is 5.6 but he can't buy half a gift, nor can he afford 6, so we round down to get 5 gifts :)
Answer:
Josef can buy 5 gifts for 75$
Question
In a survey of 50 students about television viewership, 25 reported that they watch program X, 18 reported
that they watch program Y, and 14 reported that they watch neither of these programs. How many of the 50
students reported that they watch both program X and program Y?
O 7
11
O 15
18
Answer:
18....I hope thats righ
Step-by-step explanation:
Rationalize the denominator.
Answer:
B. 27+3√5/76
Step-by-step explanation:
3/9-√5
~Multiply the conjugate to everything (9 + √5)
3(9+√5)/(9-√5)(9+√5)
~Simplify
27+3√5/76
Best of Luck!
PLEASE HELP ME 40 POINTS
Answer:
Brainliest is appreciated
-4, -1, 5
Step-by-step explanation:
when x = -1
y= 3x - 1
3(-1) - 1
-3 -1
-4
when x = 0
y = 3x - 1
3(0) - 1
0 - 1
-1
when x = 2
y = 3x -1
3(2) - 1
6 - 1
5
Step-by-step explanation:
[tex]y = 3x - 1[/tex]
Putting x = -1
[tex]y = 3( - 1) - 1[/tex]
[tex]y = - 3 - 1[/tex]
[tex]y = - 4[/tex]
Putting x = 0
[tex]y = 3(0) - 1[/tex]
[tex]y = 0- 1[/tex]
[tex]y = -1[/tex]
Putting x = 2
[tex]y = 3(2) - 1[/tex]
[tex]y = 6 - 1[/tex]
[tex]y = 5[/tex]
{[3 x (3+6) - 5] + 20 x 2
What is the value of the expression?
A. 62
B. 64
C. 77
84
Answer:
a. 62
Step-by-step explanation:
use the Bodmas method
=3×9-5+20×2
=62
The value of the expression {[3 x (3+6) - 5] + 20 x 2 will be 62. so option A is correct.
How to evaluate a given mathematical expression with variables if values of the variables are known?We can simply replace those variables with the value you know of them and then operate on those values to get a final value. This is the result of that expression at those values of the considered variables.
So, use the Bodmas method
=[3 × 9 - 5 ]+ 20 × 2
= [27 -5] + 40
= 22 + 40
=62
Therefore, the value of the expression {[3 x (3+6) - 5] + 20 x 2 will be 62. so option A is correct.
Learn more about evaluating a function at a value here:
https://brainly.com/question/2753269
#SPJ2
Find the difference
Pls helppp
Answer:
3. -10
4. 5
5. -4
6. 24
7. 0
8. 46
9. -1
10. 42
11. -4
12. -26
13. 30
14. -5
When an equation says something like 23 - (-23) then you actually add them together because you multiply the inside by -1 to get 23 + 23
PLEASE HELP- brainliest and points will be given
Answer: Choice B
[tex]\frac{1}{\sqrt{65}}<-4, 7>[/tex]
===============================================================
Explanation:
Consider a right triangle with legs a = 4 and b = 7. Through the pythagorean theorem, the hypotenuse is
c = sqrt(a^2+b^2) = sqrt(4^2+7^2) = sqrt(65)
This represents the length of the vector <-4,7>
Dividing each component by the length will normalize the vector. This is the same as multiplying by [tex]\frac{1}{\sqrt{65}}[/tex] which is what choice B shows. The phrasing "normalize the vector" means "make the vector to be of length 1". A common application of normalizing vectors will come up in computer graphics.
The original vector and the vector mentioned in choice B point in the same direction. The only thing that has changed is the length from sqrt(65) to 1.
PLS HELP ME !!!!!!!!
Answer:
heliocentric = sun is center
geocentric = earth is center
Answer:
Heliocentric Theory goes with 2.
Geocentric Theory goes with 1.
Step-by-step explanation:
The Heliocentric theory is the theory that the Sun is the center of the solar system. Hence, the prefix "helio" which means "relating to the sun"
The Geocentric theory is the theory that the earth is the center of the solar system. Hence, the prefix "geo" which means earth.
A good way to remember which is which is to remember the prefixes.
Please please please help!! I don’t understand at all and it’s my last question thank you so much and I’ll give brainliest
B Answer:
{a, c, e, i, l, m, n, o, s, t, y}
A map has a scale of 5-15000.what distance does 16 centimeters on the map represent in real life? Express your answer in meters.
Answer:
48000cm
Step-by-step explanation:
5:15000
But, 1cm will be 3000
16cm will be 16*3000 =48000cm
Solve for x: x^2+4b=0
Answer:
[tex] {x}^{2} + 4b = 0 \\ {x}^{2} = - 4b \\ x = \sqrt{ - 4b} \\ x = 2 \sqrt{b} i \\ thank \: you[/tex]
Find the distance between the pair of points A(7,8) B(-8,4)
Answer:
Formula:
[tex]length = \sqrt{ {(x _{1} -x_{2} )}^{2} + {(y_{1} -y_{2}) }^{2} } [/tex]
substitute:
[tex]l = \sqrt{ { \{7 - ( - 8) \}}^{2} + {(8 - 4)}^{2} } \\ \\ l = \sqrt{225 + 16} \\ l = \sqrt{241} \\ { \boxed{ \boxed{length = 15.5 \: units}}}[/tex]
Solve for x. 2x^2-4x=0
A.
0, -4
B.
0, -2
C.
0, 2
D.
2, 4
What is the area of 70ft and 27ft
Answer:
1890
Step-by-step explanation:
Area formula: B × H
Substitute and solve:
70 × 27 = 1890
So, the area is 1890.
Hope this helped.
help me please
3(y+7)=2(y+9)-y
THANK YOU!!!!
Answer:
3y+21=2y+18-y
3y+21=y+18
3y-y=18-21
2y=-3
y=-3/2
need help fast plzzzzzzzzzzzzzzzzzzzz
Answer:
the answer is the 3rd choice: Pe=$14, Qe=31
Step-by-step explanation:
locate the price where S1 and D1 intersect= 14
locate the quantity where S1 and D1 intersect= 31
so, Pe=$14 and Qe=31
[-3 1/4] greater or less than [-4]
Answer:
[-3 1/4] is greater than [-4]
Step-by-step explanation:
When doing negative numbers greater or less than problems, you always want to look for the smallest negative. This is because the smaller a negative is, the greater it is that a bigger negative number
Which of the following statements correctly illustrate the addition property of equality?
Check all of the boxes that apply.
If a = b, then a + c = b + c.
ООО
If x = y, then x + 2 = y-2.
If W + 2 = 7, then w + 2-2 = 7-2.
If z-z = 9,then z-**3=9-
DONE
Answer:
x - y + z = 8
2x +3y -z= -2
3x - 2y -9z = 9
Step-by-step explanation:
[1 - 1 1 8]
[2 3 -1 -2]
[3 -2 -9 9]
Help will give Brainly points
Answer:
AAS (Angle Angle Side) shows congruence.
Step-by-step explanation:
Basically if you have Two Angles and a side length, which you do, by rule of congruence the rest of the triangle will be equal because two angles and a side length are equal.
Mathematics, fractions-
How do you solve this?
You're dividing 2/3 by 1/4, which is
[tex]\dfrac{\dfrac23}{\dfrac14} = \dfrac23 \times \dfrac41 = \dfrac{2\times4}{3\times1} = \boxed{\dfrac83}[/tex]
what is the answer to: 6m+7n+5m−3n?
Step-by-step explanation:
6m+7n+5m-3n
11m+7n-3n
11m+4n
What is 7/14 as a mixed number?
A. 11/4
B. 3/4
C. 17/2
D. 131
Answer: 7/14 cant be written as a mixed number it is already a proper fraction. sorry I could help
Step-by-step explanation:
I don’t know this answer please help
Answer:
3:2
plsss mark me brainliestt
Step-by-step explanation:
25 games played
15 won
10 lost
15:10
3:2
2 more than 5 times a number is 27. Write an equation?
Evaluate u + xy, if u = 18, x = 10, and y = 8
Answer:
[tex]u + xy \\ 18 + 10 \times 8 \\ 10 + 80 \\ 90[/tex]
Answer:
Solution,
here,
u=18
x =10
y= 8
=u+xy
=18+(10×8)
=18+80
=98
Help will give Brainly points
Hey guys! Can someone help me! Geometry
[tex]\\ \sf\longmapsto 3x+3x-2=46[/tex]
[tex]\\ \sf\longmapsto 6x-2=46[/tex]
[tex]\\ \sf\longmapsto 6x=46+2[/tex]
[tex]\\ \sf\longmapsto 6x=48[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{48}{6}[/tex]
[tex]\\ \sf\longmapsto x=8[/tex]
[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]
Write an equation to represent the value of x in the figure given.[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]
Given, < DAB = 46°From the figure we can see that, < DAB = < DAC + < CAB ⇨ equation 1.So, 46° = 3x° + 3x - 2° ⇨ equation 2.Now, let's solve & find the value of x with equation 2.
[tex] \large \sf \: 46° = 3x° + 3x - 2° \\ \large \sf \: 46 = 6x - 2 \\ \large \sf \:46 + 2 = 6x \\ \large \sf \:48 = 6x \\ \large \sf \: \frac{48}{6} = x \\ \large \boxed{\bf \:8 = x}[/tex]
