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stich3 [128]
2 years ago
10

If 2+3+6+9=21 then does 7x3=21?

Mathematics
2 answers:
Oxana [17]2 years ago
7 0

Answer:

Yes

Step-by-step explanation:

If you do 7x3 it equals 21.

madreJ [45]2 years ago
6 0

Answer:

no bc 2+3+6+9 equals 20

20∦21

Step-by-step explanation:

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Ou want to get an oil change every 4,000 miles. How many oil changes do you get in a year driving 1000 miles a month?
deff fn [24]
3.

1000 miles per month.
12 months in a year.
1000 × 12 = 12000 miles per year

Oil change every 4000 miles.
12000 ÷ 4000 = 3

Therefore 3 oil changes per year.
5 0
2 years ago
Your friend claims that it is possible to draw a right triangle where the cosine of either angle (theta) is exactly the same val
avanturin [10]

Answer:

B. No

Cos \ \theta\neq Cos (90-\theta)\textdegree

Step-by-step explanation:

-A right angle triangle has two complimentary acute angles and one right angle.

-\theta is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.

-Complimentary angles add up to 90º.

#For complimentary angles:

Sin \ \theta=Cos \ (90-\theta)\textdegree\\\\Cos \ \theta=Sin(90-\theta)\textdegree\\\\\therefore Cos \ \theta\neq Cos (90-\theta)\textdegree

The two acute angles cannot have the same Cosine value.

Hence, she's not correct.

5 0
3 years ago
If T is the midpoint of segment RS then, Segment RT is congruent to segment TS..<br> Help please!!!!
omeli [17]

Answer:

Definition of Midpoint

Step-by-step explanation:

Since T is the midpoint then it is equadistant from R to T and T to S

3 0
3 years ago
A grocery store sells a bag of 4 oranges for $3.64. How much would it cost for 6
Sergeu [11.5K]

Answer: $6.54

Step-by-step explanation:

The price of one orange is $1.09

The price of 4 oranges is $3.64

The price of 6 oranges is $6.54

6 0
3 years ago
Read 2 more answers
(Algebra II) Standard Form of a Quadratic Function - I'm having trouble with two questions on this quiz? Please don't just give
anastassius [24]
1.
the x value of the vertex in form
ax^2+bx+c=y
is
-b/2a
so

-2x^2+8x-18
x value of vertex is
-8/(2*-2)=-8/-4=2

plug it in to get y value
-2(2)^2+8(2)-18
-2(4)+16-18
-8-2
-10

vertex is at (2,-10)
or you could complete the square to get into y=a(x-h)^2+k, where the vertex is (h,k)
so as follows
y=(-2x^2+8x)-18
y=-2(x^2-4x)-18
y=-2(x^2-4x+4-4)-18
y=-2((x-2)^2-4)-18
y=-2(x-2)^2+8-18
y=-2(x-2)^2-10
vertex is (2,-10)






5.
vertex is the time where the speed is the highest
at about t=10, the speed is at its max
6 0
3 years ago
Read 2 more answers
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