Your in High School, you should know quadratic formula; start by subtracting 7 from both sides making it 4x^2 - 12x -7, now solve it using the quadratic formula.
Answer: X= 7/2
X= -1/2
Answer:
10
Step-by-step explanation:
Given:
There are 5 different varieties of flowers.
To place 3 different varies in each vase.
To find how many ways we can do so without duplicating a vase.
Solution:
We need to choose 3 different flowers out of 5 different variety of flowers.
In order to do so we use combination.
We can place the flowers in ways.
Thus, we can make vase in 10 different ways without duplicating a vase.
Answer:
The approximate growth rate of the savings account is 2.5%
Step-by-step explanation:
Given the the function S(x) = 5, 000 * (1.025) ^ (0.7x)
From the function, we can see that part: (1.025). It presents for the growth factor or rate with the formula as:
(1 + r) where r is rate
So we have:
(1 + r) = 1.025
<=> r = 1.025 -1
<=> r = 0.025
In pecentage, we have the rare: 0.025 *100% = 2.5%
So the approximate growth rate of the savings account is 2.5%
Answer:
a) X = 65°
b) Y = 71°
c) Z = 44°
Step-by-step explanation:
a) X is a vertical angle with the one marked 65°, so has that same measure.
b) Y is an opposite interior angle with the one marked 71° where the transversal between angles Y and Z crosses the parallel lines. That makes it have the measure 71°.
c) Z is the third angle of a triangle with the other two angles being 65° and 71°, so it is 180° -65° -71° = 44°. (The sum of angles of a triangle is 180°.)
The next number would be 20 because every other number is just multiplying by 2.
Ex.
3, 6. 3•2=6
4, 8. 4•2=8