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2 years ago

What is 2 log x - logy - 2 log z written as a single logarithm?

Mathematics

1 answer:

Hitman42 [59]2 years ago

4 0

Answer:

Log [x^2 / yz^2]

Step-by-step explanation:

2log(x) =log(x^2)

-log(y) = The minus sign means that you can divide it by first log(x^2)

-2log(z) =log(z^2), and the minus sign again means you can divide it by the first log(x^2)

So, the whole thing can be written like this:

Log(x^2) / [log(y)*log(z^2)], OR:

Log [x^2 / yz^2]

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Answer:

C. 31.25 cm²

Step-by-step explanation:

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Select the correct answer. to solve this system of equations using substitution, what could be substituted in place of y in the

Rina8888 [55]

To use substitution to evaluate this system of equations, the y value to be substituted is 2x - 7.

<h3>What is method of substitution?</h3>

The algebraic method for solving simultaneous linear equations is the substitution method. The values of one variables from one expression is substituted with in second equation, as the name implies.

Now according to the question;

The expressions are as follows;

4x = 5 – 2y and y – 2x + 7 = 0

To solve the following system of equations, we must determine what substitution must be made in place of y in the first equation.

Let us now deduce the value of y from the second equation.

y – 2x + 7 = 0 ⇒ y = 2x – 7

We now have the y value, which we can plug into the first equation;

⇒ 4x = 5 – 2(2x – 7)

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x = 19/8

Substitute the value of x in y to get its value.

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To know more about method of substitution, here

brainly.com/question/22340165

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1 year ago

£396 in the ratio 5:4 <br> help please

ArbitrLikvidat [17]

Answer:

5 : 4 10 : 8 15 : 12 20 : 16 25 : 20

30 : 24 35 : 28 40 : 32 45 : 36 50 : 40

55 : 44 60 : 48 65 : 52 70 : 56 75 : 60

80 : 64 85 : 68 90 : 72 95 : 76 100 : 80

105 : 84 110 : 88 115 : 92 120 : 96 125 : 100

130 : 104 135 : 108 140 : 112 145 : 116 150 : 120

155 : 124 160 : 128 165 : 132 170 : 136 175 : 140

180 : 144 185 : 148 190 : 152 195 : 156 200 : 160

205 : 164 210 : 168 215 : 172 220 : 176 225 : 180

230 : 184 235 : 188 240 : 192 245 : 196 250 : 200

255 : 204 260 : 208 265 : 212 270 : 216 275 : 220

280 : 224 285 : 228 290 : 232 295 : 236 300 : 240

305 : 244 310 : 248 315 : 252 320 : 256 325 : 260

330 : 264 335 : 268 340 : 272 345 : 276 350 : 280

355 : 284 360 : 288 365 : 292 370 : 296 375 : 300

380 : 304 385 : 308 390 : 312 395 : 316 400 : 320

405 : 324 410 : 328 415 : 332 420 : 336 425 : 340

430 : 344 435 : 348 440 : 352 445 : 356 450 : 360

455 : 364 460 : 368 465 : 372 470 : 376 475 : 380

480 : 384 485 : 388 490 : 392 495 : 396 500 : 400

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What is a Ratio?

A contrast, which exists between two particular numbers, is defined as ratio. Our ratio calculator is developed to compute this contrast and find out the relationship between these numbers.

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In order to keep numbers in direct relation you should first divide or multiply, which depends on your task, them in the ratio. Therefore, a ratio of 8/6 is an equivalent ratio of 4/3: in that particular ratio calculation, you should just multiply 4, as well as 3, by 2.

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Answer:

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Step-by-step explanation:

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