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eduard
3 years ago
13

X squared - 4x - 45=0

Mathematics
1 answer:
Lana71 [14]3 years ago
6 0
If your trying to find the value if x then x=9 and x= -5
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What is the answer of this on (if 3 pieces of candy cost $2.10 how much would four pieces cost)
ale4655 [162]

Answer:

70 hope it helps

Step-by-step explanation:

210/3=70

5 0
2 years ago
Carlos read 144 pages in 3 hours. His little sister read 24 pages in 1 hour. carlos's average reading rate is what percent of hi
ehidna [41]
Hello! So Carlos' sister reads an average of 24 pages in 1 hour. He reads 144 pages in 3 hours. To find the unit rate Carlos reads, let's do some division. 144/3 is 48. Carlos reads an average of 48 pages in 1 hour. If you use mental math, 48 is double the amount of 24. 200% is just simply 2. 24 * 2 is 48. D is the only one that shows an answer that even fits for this scenario. Carlos' average reading rate is 200% of his sister's. The answer is D: 200%.
3 0
3 years ago
Read 2 more answers
A boat starts from a port and moves 12 miles north and then moves 5 miles east. what is the present distance of the boat from th
disa [49]
If you sketch the path of the boat, you will form a right triangle towards the port. The distance from the port to the present position is the hypotenuse since it is opposite from the right angle formed by the 12 miles north and 5 miles east movement. Since it is a right triangle, use the Pythagorean Theorem to solve the hypotenuse.

Solution:

h² = o² + a²
h² = 12² + 5²
h² = 144 + 25
h² = 169
√h² = √169
h= 13

The present distance of the boat from the port is 13 miles.
7 0
3 years ago
A rectangular image of length 5 cm and width 7 cm is magnified in a studio. On magnification, 1 cm of the image represents 15cm.
Andre45 [30]

Answer:

238 cm

Step-by-step explanation:

so we have a scale factor   of  17: 1

originally we had the dimensions:   3cm by 4m

now we have    3*17  by 4*17  = 51 cm by 68 cm

Perimeter = 2*51 + 2*68 = 238 cm

8 0
2 years ago
Read 2 more answers
Classify the expression: 5x^2 + 2x - 6
svp [43]

Answer:

A second degree polynomial or a positive quadratic.

Step-by-step explanation:

4 0
3 years ago
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