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tiny-mole [99]
3 years ago
7

Use the quadratic formula to solve x2 + 8x + 9 = 0. Estimate irrational solutions to the nearest tenth.

Mathematics
2 answers:
Bess [88]3 years ago
7 0
I'm Pretty Sure It Would Be Answer A. {-6.6, -1.4}
vovangra [49]3 years ago
5 0
Dianna67 is right. The answer is (-6.6, -1.4). If you use the quadratic formula, you will get two solutions:

-4 - sqrt of 7 & sqrt of 7 - 4


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Vadim26 [7]

the answer is 2 what you do to the bottom you do to the top

6 0
2 years ago
Read 2 more answers
Please help , thank you !!!!!!1
Lynna [10]
Answer is 7.
55+5X=90
5X=90-55
5X=35
X=35/5
X=7
6 0
3 years ago
Use set-builder notation to describe the following sets: (a) {1,2,3,4,5,6,7} (b) {1, 10, 100, 1000, 10000} (c) {1,1/2, 1/3, 1/4,
Alja [10]

Answer:

A) The set builder notation is: {n | n∈Z, 1≤n≤7}.

B) The set builder notation is: \{10^x | x=0,1,2,3,4\}

C) The set builder notation is: \{\frac{1}{n} | n\in z\}

D) The set builder notation can be: \{x\ \in R | x=x^3\ and\ x\neq 1\}

Step-by-step explanation:

Consider the provided information,

We need to use set-builder notation to describe the following sets.

(a) {1,2,3,4,5,6,7}

Here, the number are integer starting from 1 to 7.

Thus, the set builder notation is: {n | n∈Z, 1≤n≤7}.

(b) {1, 10, 100, 1000, 10000}

The above set can be written as:

\{1, 10, 100, 1000, 10000\}=\{10^0, 10^1, 10^2, 10^3, 10^4\}

Thus, the set builder notation is: \{10^x | x=0,1,2,3,4\}

(c) {1, 1/2, 1/3, 1/4, 1/5, ...}

Here the numerator is 1 for each term but denominator is natural number.

Thus, the set builder notation is: \{\frac{1}{n} | n\in z\}

(d) {0}

The set builder notation can be: \{x\ \in R | x=x^3\ and\ x\neq 1\}

8 0
3 years ago
I will give Brainliest to who answers. 9a + 46 = 5a + 74
Sonbull [250]
“a” would equal 7!! hope this helps :)
7 0
3 years ago
Use a protractor to find the measure of each angle in the circle
dalvyx [7]
You shouldnt be cheating! what would your guardian say!!! 

*edit*
<span>dont even need a protracter b/c there all evenly spaced and a line = 180 so 180 / 3 is 60</span>
8 0
3 years ago
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